You should do a search for pregnant shooting hunting etc, as there has been at least one fairly recent thread that went into some detail about this topic.
Most of us will say no, she should not shoot while pregnant. Primary reasons are:
1) Potential lead exposure is bad for the fetus.
2) Definite loud sound exposure is bad for the fetus. (Amneotic fluid is not a good sound suppressor.)
Most ob/gyn's that responded seemed to feel it would be a bad idea.
Some people will disagree. I noted that none in the previous thread who thought it was ok were doctors.
Check for yourself.
Good luck,
M
Edit: Good luck with the baby, not just the search. And congratulations.
Edit 2: I ran the search function for "pregnant shoot" and found the recent thread I was talking about
:
http://thefiringline.com/forums/show...pregnant+shoot