Shar-ing- To use or enjoy something jointly or in turns; To allow someone to use or enjoy something that one possesses
Mommy isn't into sharing, while I am all about beverage sharing. I am willing to share Mommy's water or milk, I will even politely wait my turn. If she wants to take a sip from my water bowl, I'll have no complaints.
If she didn't want to share with me, she shouldn't have bought glasses that fit a cat's head so nicely.