The Mommy Proof is only in one place. By it sitting as a single insert/promo card, when a user is going card to card, they show up at the end of the set (and any items in the Note field go into the base set's glossary). As for this card, I just added it. Feel free to add a similar Note2 as is the one in Note2 for Mommy Proof.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).