I am sorry for your situation.
I have one experience with wwoof, not in the US though. And in general, you will meet a lot of people in a similar situation as you are in. I was in a certain eastern European country and the work was hard, but I also got my European treeworker certificate and during the last 2 weeks many opportunities to hike, swim and relax.
What I heard from some of those Wwoofers was: Some farms or 'employers' require you to work hard, almost like 'free' labour. Others are much more relaxed and require eg. 5-6 hours of work per day and even offer you other activities or leisure time or a certificate.
Always be prepared to walk away if you happen to meet such "employers" as they spoil it for the others.
Good luck!