Josh,

Anniversary — You’re getting divorced AND described the relationship as toxic. I would not get her a gift to celebrate your marriage. If she gets a card or gift, express gratitude and say “Thank you.” I would NOT tell her her gift is “inappropriate”. That’s manipulation and creates more friction.

Mother’s Day — I would help your kids get a gift. Mother’s Day celebrates her as their mom. Stay out of the narrative. Your message sounds like manipulation.