I can see why she would be more protective, so it's kind of her she wants to keep you safe. Still, this forum is particularly safe. Maybe...
Maybe you can say that this site is for people who like anthro art. Name examples like The Lion King is anthro art, and it's 100% kid-friendly, Alpha And Omega (a newer film about wolves), etc.
Say this forum is like those movies: Meant to be kid-friendly, and it's all being supervised.
This site is helping you connecting to others and sharing a common interest.
Maybe that will help if it comes up again?