Update: she's not doing very well, I think she aborted her babies and now has the shimmies. I quentined her into my old 10gallon. I'm thinking about just keeping all male mollies, because this instance was very stressful and saddening. And I'd just breed guppies and platiesWhen she starts to not come to the surface for food she's probably close. Or when she wobbles on her way up. Unfortunately there is a very good chance you will lose some, but if you have a lot of plant cover you can likely save a few. In reality you don't want them all to survive, you'll end up overrun quickly that way.