She will be totally fine in the trap, as long as you keep her in for no more thatn 48 hours..
Usually they are bothered by other fish especially males when ready to drop, putting them in the trap can reduce stress as she has her own space to not be bothered, ive used traps for years and still to this day have never had a fish die in a trap.
If your tank is very well planted then fry will survive but probably not all, a trap ensures you of a higher survival rate.. Put her in a trap and if she is ready to drop, you will find she will not fight to get out and will be very relaxed although for the first few minutes she may try..
The best thing i have learned is that when you put a fish in a trap, turn the tanks lights out and put a cover over the tank, they seem to relax quicker this way.
Good luck.