Being the spouse of LPR is very very tough. My wife can attest to it.
I was LPR not too long ago but recently naturalized. I can tell you what we have done and been through. You and your spouse have to make the finally decision.
When I was LPR and my wife was here on B1. Before her 1-94 expired, we apply for her F-1 and I-130 when no company willing to hire her for H-1. 6 months later, they request more information for her F-1 while she is taking classes since filing the F-1. Then 6 months has lapsed and we did not hear from INS. Upon calling the INS, she was told that her F-1 was denied and the school should have informed her.
Since then, she was out-of-status and doing some volunteer works to feel useful in the society. Two years later, I got my US citizenship, she is now waiting for her AOS fingerprint and interview. She has endured and missing 3 productive years of her life except doing nothing and wait in US.
One thing you need to know for sure is that she will be in a lots of stress and anxiety during this period. It is hard, very hard to see your spouse feeling sad and maybe even in low self-esteem. We have our share of pain and arguements. But it is getting to the end now. Hope to emerge from this as a stronger couple.
So, both of you may want to discuss if she should/want to return home and try to come back to US or stay out-of-status in US until you gain citizenship.
Good luck.
Kenmw