Are either of you gaining new memories of a daughter you never knew existed?
Speaking of which, I find it a bit odd how Sara talked about Stein's daughter like she is fake. In this new timeline, she is very real and Stein's memories are real memories of what actually happened. The new timeline is reality. So I think it would be more accurate to say that the old timeline used to be their reality but I don't think it is accurate to say that the daughter is not real. Of course she is real in this timeline.