
Yeah I agree but the part about her memory is the issue her brain is blocking it out and I have a large hunch that it's something to do with that dream he had where he came to find her laying in blood they both must've faced so much trauma and clearly after the separation she completely blocked him out most likely too much pain there and on top of that maybe as a child she also felt that ripping pain of having her brother snatched from her the only person she felt she could face the abuse with that she blocked it to protect herself from further pain but I also do believe it would be best for her to face those lost memories for her to heal and grow
I would forget the "he's your brother" or "family" stuff because it's too soon and there are too many unknowns about the past. Her fearing change isn't healthy though. So maybe she can see him as an acquaintance to start with? Then over the years she can remember more and make a more informed choice on if she should see him as part of her life?