I do
I'm in agreement with the other guys here. I wouldn't bail right away though. If your relationship is good outside of money issues and her work troubles, it's probably worth sitting down and working out a plan together.
30k depending on where you live is probably an okay wage for a single guy. 30k for two people is stretching it pretty thin. Add kids into the mix and you'll be stuck.
I would start by having or even helping her find something that is part-time and something that she's even remotely interested in. If she's not willing to look or hold something down like that, either you'll have to scrimp by, make more money yourself, or bail. Really it just depends on what your relationship is like and what it's worth to you.
Good luck!