You will need to contact your lender to determine what they are willing to do regarding transferring the mortgage to your mother. As for deed transfers, you can contact your county real estate assessor's office for more information. See also:
http://resources.lawinfo.com/Search.html?q=deed.
I do suggest you contact an attorney to determine what legal options are available to you and for what purposes. You didn't mention too much about why you are interested in getting out of the home/mortgage. If its for financial reasons, you may want to consult a debt/creditor attorney. A traditional real estate attorney will be able to advise you of the process for transfering the home as well. Good luck.