karen0205
A lot of people say you should cleanse your deck if someone touches or holds your cards (sorry for making a mistake in title, my mom actually held and shuffled my deck).
I don't think you need to do anything. The readings you do come from you,
not the cards. I don't think that your mom using the deck will make your readings
any different. If you are unsure you can always cleanse them. There are
ways that people do that here on the forum. I just put the deck back in
the correct order. I do that and I also keep a clear crystal in my drawer
where I keep my decks that I use. You could keep a crystal in the bag with
the deck if you use a bag. Or just set the crystal on top of the deck when
you aren't using it. I think you will be ok with your readings and shouldn't
have to do them again. Good luck with your readings!