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She won't be wiggling around to have the fry, more so floating and wanting to be left alone. Depends on the fish, if you know there personality and they never wiggle there is something going on, if you recently got it who knows.
A LOT of those fry will be eaten if they are still in the same tank. Some fry seem to be more adept at hiding than others (natural selection at work) so while I would expect some to survive you won't get the number you have seen born reaching maturity unless separated.
There around 88 hours old now and 50 - 60 are still going strong. I just bought them some tetramin baby food for them and I have some brine shrimp eggs that I hatch and feed them.