Greetings, Macksmom, and welcome!
I think it's really great that you've got your first litter on its way and that you're introducing your child(ren) to the Circle of Life.
So many times (with rabbits) the answer to a question is both "yes" and "no". A doe losing her first litter is neither frequent nor rare. Sometimes it happens, often it doesn't.
As I was telling a customer of mine on the phone as his first litter arrived and he kept asking me "what should I do?": Rabbits have been having babies for years and years and they've done just fine without us. There's a reason that men don't have babies - we just freak out and think we should be doing something when all we need to do is just stay out of the way and let Nature take its course.
Read and study up - but mostly just provide her with a dry warm cozy nest box and let momma do her job. God willing, things will go well. If not, know that the next time, things probably will.
Good luck to you - and please keep us posted on how things are going.