Who owns the contents of a home , if the deed was transfered before original owner passes away?

I think the answer is that the person whose name is on the deed owns the real property and anything "fixed" to the property.  Tangible, moveable items, such as your mother's clothes, jewelry, appliances, etc. are likely assets of her estate and will pass by operation of her will or, in the absence of a will, the laws of intestate succession.  Please note that if the deed transfer occurred within one year of your mother's death and was for less than fair market value (such as a $1 gift), there may be inheritance tax payable on the value of the property.  You should speak with an attorney who handles probate and estate administration to get advice specific to your situation .