There's no need to apologize, but thank you nonetheless. [It had bothered her a lot at first, meeting people whose faces she should remember by the way they spoke to her, only to see their smiles fall when she admitted to not recalling having ever met them before. Eventually she had moved on from that, preferring to not dwell to much on what she could not change.]

I understand your feelings in not wanting her to return, though... the possibility is still there.