My old genetics professor told me that there are normally 2 types of behaviours when it comes to rearing offspring. There is a genetic component - so animals know how to breed without being taught, and also a learned component.
When an animal has been reared by a parent, it makes a better parent - as judged by the health and survival of its offspring when compared to the opposite.
I reckon you should let her hold as normal - and then strip her once the kids are old enough. If she is actually getting weak cause of not eating - she will automatically spit the fry although by that stage, im sure you will have stripped them already.
LA is right - Don't fix nature; it aint broken... yet :lol: