As to who the second wife of the prophet (saw) was it was sawda (ra)

as to when they were married i think it was when she returned from abyssinia correct me if I'm wrong

the prophet's (saw) wife before Sawda(ra) was Khadijah (ra)

My question to get you thinking:

Which sahabiyaat had her hand chopped off defending the prophet of Allah (saw)??? and which main battle did this happen in???