Dear Shining Star 3003,
Generally you wouldn't mention a deceased parent on the invitation, however, you do want to put something in your program and possibly do a memory candle or honor your mother with a flower on the altar.
However, if you want to go ahead and list your mother,
You can word your invitation something like this:
Jane Robinson
daughter of
Mr. Timothy Robinson and the late Mrs. Hilary Robinson
etc.
Hope this helps. Please let me know if I can be of any further assistance.