As I stated originally, with a lawyers help what you want done can be done. But sadly, it will also take some $$ to do it. Ask what your best options are long term. With estate planning issues in mind it is possible that paying more for legal papers now will cost much less later on.
The one catch would be the mortgage company. But as long as you can make the payments yourself what advantage is there to have her on the mortgage itself?
She would have to qualify for a loan (alone) at the amount you agree on the house AND have the house appraise for that amount if she was to get a new mortgage.
You can sell your home to anyone. Are you wanting to sell to your wife because you are moving out or do you just want to add her to the deed and mortgage?
Its your home and you can do whatever you want to do.
Could you provide a bit more information?
Feel free to contact me directly to discuss your situation further. You can reach me at (215) 669-0589 or you can simply email me.
(215) 669-0589 Direct
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