I would say no until she gets to a certain point (like showing). I'd say be extremely careful after three months.
Overall I'd say you're child over paintball, but if she is extremely adament about playing I'd say get some sort of padding like another chest protector.
If she doesn't like that idea then I'd say a pillow is the next best idea or get something like this: http://www.medievalcollectibles.com/infant...beson-9172.html
That's medieval padded armor or a "gambeson". It will soften the impact of a paintball by tenfold (I've tried it and barely felt the shots). When she gets to the point of REALLY bulging out she probably won't have the energy to play, but if she insists (boy are you lucky), just custom cut the armor so it will fit over her stomach.
If you can't afford the armor or just don't want to get it a bed comforter could do the same effect (not as effective, but you could double it up I guess).
Veritech Squad, on Apr 17 2007, 03:58 PM, said:
Punch her in the stomach. See how she deals with it.
Thats cruel, but cruelly humorous.