There is no "taking them back" they'd have to come voluntarily and I don't think they're gonna do that. The best she can hope for is a relationship with them as adults and friends, it's kinda too late to be their mom.
Right? Lady, they're 20, they ain't gonna do anything they don't want to and they have NO allegiance to her after being without her for all those years. She's a complete stranger to them. (And that's even putting aside the fact that they're in love with Keiichi.)
AND THE MUM CANT JUST TAKe THEM BACK, but I thought the real mum died but his one looks like ten and taking because of he beauty spot but it could also be he step mum who's taking them back just because they're smart and yh let ic and not to mention FAMOUS!
There is no "taking them back" they'd have to come voluntarily and I don't think they're gonna do that. The best she can hope for is a relationship with them as adults and friends, it's kinda too late to be their mom.