Have you explained this to the school? You might be suprised how supportive they are. I know people have defered thier first year due to pregnancy or death in the family. I know the returning to the homefront thing can be a little difficult (I've been through it), If it were me, i'd definately want to stay with my spouse, and if you explain this to the administrators it's possible they will at least be sympathetic.
And as far as getting in to grad school next round? I would assume that if you got in once you could get in again. You may have to explain why you chose not to attend school the previous year, but as long as you adress it I wouldn't think it would be too much of a problem. It's probably dependent on the department.
I've got nothin' for the law school thing, sorry. That's your decision.
At any rate, good Luck!