:salamext:
Also sister, if someone brings forward the argument on why the Messenger of Allaah's grave has a room around it and why its 'higher than ground level.' When this shouldn't be done for other peoples graves. We can explain it using the following points insha Allaah:
1) We know that the Prophets are buried in the place where they pass away. He (peace be upon him) passed away in Aa'isha's room.
2) Allaah's Messengers house was near the Masjid, and when Masjid un-Nabawi was being extended, the room of Aa'isha (may Allaah be pleased with her) was in the way.
They couldn't take the room down since 1) Aa'isha may have lived there still. or 2) People were afraid that if they take the room down, then the grave will become apparent, and it may be more harmful that way since people may come to the grave and worship it since its clearly infront of them.
So they extended the Masjid without taking the room down, and i think this is what we see today. It is the room of Aa'isha (may Allaah be pleased with her.) Which includes the graves of Allaah's Messenger (peace be upon him), Abu Bakr, and Umar (may Allaah be pleased with them.)
And Allaah knows best.