It seems to me they could probably make it, if they moved in together. Two crap jobs, full time, can add up to a reasonably substantial amount.
Some parents don’t mind if their child moves back when hurting in this economy. Our next door neighbor has their adult son living at home. The son does all the yard work and takes care of all his laundry etc... I feel sorry for the kid since he turns in resume after resume, interview after interview. I didn’t live during the Depression but something tells me that families helped each other when they were down. I have the feeling that families took their own kin in until things got better. IMHO.