jeremy bornstein:

> So, for the optimum health of my potential future progeny, how
> important is it for me to prevail upon the prospective mother to
> reconsider her diet?

Probably pretty important. If she is at all open-minded, refer her to:

http://www.beyondveg.com/

and/or:

http://chetday.com/vegandietdangers.htm

and let her research the issue herself.

Cheers,
Kirt