You will more thank likely have to take out loans. There are federal loans for grad school (Grad Plus, I think?) as well as private loans to help with the cost of living expenses if necessary.
Will your husband be able to support the household on solely his income while you are in CRNA school? That will be a determining factor in whether or not you take out minimal loans or a maximum amount.
Some will say you need not worry until you are at that point however from a purely financial aspect - worry now. Better to worry now and plan, than wait until two days before you start the program.
Try saving if possible, although for most people, it is difficult to save enough to cover all costs. I've been interested in CRNA school for about 3 years now, just been trucking along and keeping updated on it for myself, knowing that one day it will happen. In that time, I have not come across any grants or scholarships available.
You could contact the prospective schools and ask them. The FA offices there should be a big help.
Also, keep in mind state v. instate, private v. public when looking. You have other options to - military and USPHS (they are not military, but they are a uniformed service who will repay loans up to a certain amount, under some circumstances).
What area of the country are you in? What is you and your husbands financial life like now? Not to pry or be rude but just trying to help you out as much as possible. Unfortunately some people are not polite about CRNA inquiries on here