I'm no lawyer, and this isn't professional advice of any sort, so assume I'm talking out of my rear end.
That said, it seems to me that an LLC is most helpful when you lose a lawsuit--it doesn't prevent getting sued. And if someone is going to file a lawsuit, they sue everybody--the LLC, your wife, the bank, you, your dog, etc.--hoping it will stick to someone with money.
I know someone who, through her LLC, is a co-owner in a Delaware Statutory Trust (DST) property and she still got sued. Like my business law professor always said: "You can sue a ham sandwich."
But I understand wanting to have some sort of asset protection, so what if you and the Mrs. re-title everything that is in her name to you? That would essentially make her as judgement proof as the LLC would be. Maybe... again, not a lawyer. Or deed the property to the LLC after closing? Steve Combs' non-legal advice above is probably better than my non-legal advice... Good on you for jumping in!