Salaamu Alaikum, brothers and sisters.
Bismillahir Rahmanir Rahim
It is very important to teach the muslim children but not only teach but how to live Islam. It's starts when they are small. Is your wife muslim? One of my brothers married a non muslim, from her point of view they were not going to follow a religion. My brother made many mistakes before marrying her and throughout his marriage. When he introduced Islam to their children, she took them to church. My brother is not strong in faith, his marriage ended but now his kids are teens and live their lives as non muslim, they're smart, sweet, kind and well mannered but aren't muslim. Many times brothers who marry non muslim women, don't establish the foundation of Islam in their home, very few do. There's also those who say we are muslim but live life as non muslim and don't establish Islam in their homes. Salah and reading Qur'an is for only Ramadan or maybe Jummah Friday. Many times if the foundation in the home is weak than the children are weak in faith except those whom Allah choses. I had another brother, he married a muslim sister but he was weak in faith, they would both go up and down, would pray salah and than wouldn't. They had 3 children as well, with each child instead of their Iman growing it became less. They took their children to the masjid every Jummah but they didn't not fully establish Islam in their home, my brother helped destroy his family, she also help destroy their family both went further away from Islam, they divorced, my brother in and out of rehab became christian, my sister in-law, moved in with her family lived her life as a non muslim. Her and her family who were muslim established Haram in their homes. Her stepfather talked about Allah, made salah but didn't build a strong muslim home, he did things, my nephews and niece knew were wrong, their grandmother on their mother's side exposed them to haram and bidah, they knew their mother didn't live a muslim life style, she lived in haram. After her stepfather allowed my older nephew and niece go trick o treating, Allah took his soul four months later. Than Allah placed sickness on their grandmother and took her away from them to live with their aunt on their mother's side. My family continue to give dawah to my brother and my sister in-law. My brothe cut off communications. My sister in-law continue her life style but she wanted her children to be raised muslim and asked my family and I to teach them about Islam. She died a year after her stepfather. The muslim community knew about her life style so at first they were not going to bury her as a muslim. Her sister pleaded with the muslim because she was going to cremate her sister because she was not catholic like her. Alhamdulillah, they found a post on facebook where she declared herself muslim and gave the khalimah. So she was buried as a muslim next to her stepfather. Before her passing, my nephews and niece were brought to my family and I, we were told by the sister in our community that they could not wake up their mom and that she was in the hospital, were she later died. That night they came to us, as soon as salah came in we had them pray. We established them in salah and taught them the true way of Islam, they fought us every step of the way, but the salah help strengthen them, we taught them surat to recite, introduced them to Ramadan and how to fast, they fought us horrible during Ramadan but we kept Glorifying Allah, everything we told them we mentioned Allah, we told them the importance of salah, we would read Qur'an to them, read and teach du'as to them. We set boundries that they didn't have before. Qur'an, Sunnah and Salah were and are the foundation in our home. Allah says your family is a test especially women and children. They were a difficult test but they came so far Masha'Allah and still have ways to go but they love making Salah, my older nephew and niece fasted the whole month of Ramadan, my older nephew did a horrible mistake during Ramadan but continue to fast, my niece controls her anger better, my youngest nephew acted up at the beginning 10 days of Ramadan but change for the better during the rest of Ramadan, he would fast on weekends. They all ebded up loving Ramadan and not wanting Ramadan to go. We just don't tell them they have to do this or they can't do that we explain why and according to Qur'an and Sunnah. Islamicly if they refuse to make salah you spank them, we didn't spank to pray but we let them know you will pray and this helped with their healing. They still have ways to go my niece loves wearing hijab now, the boys are learning Islam is not only the masjid its a way of life. We always tell them the truth and they are beginning to tell the truth more. Allah is not shy in telling the truth. In shaa Allah have patience with your daughter but be firm, yet gentle in encouraging her to pray Salah. Recite du'as, ayatul kursi in home, the Quls, play Qur'an, Allah should always be glorified and talked about in home, have her pray by herself and have your wife watch her, women get more blessings praying by themselves. My mom and I are teaching my niece how to pray by herself, and how to pray when its only sisters and of course how to pray behind brothers. Her brothers lead her in salah, their uncles my brothers are teaching them. The brothers and sisters gave wonderful advice, everyone is different but don't let her miss her salah if she is in puberty because tomorrow is not granted us. In your salah make du'a beg Allah for help. In shaa Allah place her with sisters who will teach her Islam and who will be a blessing. Whomsoever Allah guides none can lead astray whomsoever Allah leads astray no one can guide, I bear witness that there is no diety that deserves to ve worship in truth except Allah, I bear witness that Prophet Muhammad (Sallahu Alayhi wa Sallam) is His servant and messenger. May Allah grant you success, establish love for Allah in your daughter's heart, may Salah be a comfort for her and not feel like a burden, may Allah grant her peace and tranquality, patience, obediance in doing good and dislike and discomfort in doing bad. May Allah strengthen you and your family, fill your home with salah, sakinah, and barakat and may you and your family be together in the Jannah. Ameen!