[csw]

I would cosleep...and remember..alot of 5 month olds who have been home since newborns don't sleep through the night..
Make sure she isn't hungry, not teething (she's a little young for this) , isn't having any physical ailment like ear infection etc..but I would cosleep..
She has been through so much and needs you to practice attachment parenting with her..
cosleep, cobath, carry her in a sling..the more skin to skin contact the safer she will feel..it took Ana
6 months of being home to relax enough to take a nap more than 10 min..she was up at night for along time and still is! Please, don't ferberize a newly adopted baby..please don't...she just wants to be close to you..other cultures have the babies sleep by them..just make sure you follow safety precautions..firm mattress etc..