I would leave her in the tank, and let her spit in there.
Lots of people do different things to try to save more fry such as stripping her at about 26-30 days, but that has issues as well.
I think better to leave her there.
AS for raising fry, best thing for them is a grow out tank and whatever food you are feeding now just crush it up into small pieces as possible and feed them that. That is the food mama taught them to eat, and they will do fine.