What to do

[Rashy]

Hi everybody, this is a dufficult question for me to ask. Almost 2 weekend ago a syrian long haired boy were rehomed to me. I have astma bur it has never reacted as this before. I do think a lot of what I should do,and the previous home can take hun back. The thing there are holding me back is that I dont agree on her hamster hold and she is very up and down on what she says,she have gotten infomation from me she have said she want to follow. She want to arrange so he gets What he needs if he comes back to her, a cage there are 100*50 cm.
I’m so insecure,she wants him back so he comes back to smells and sounds he know,on the other hand I know she wanted to give away the female because she have bitten the kids,and I feel she is a little bit negative.
Thoughts?