MIL 😒😤😡

I have had it with my MIL!! She babysit today and when I came to pick my LO up she says "oh i gave him a taste today" 👀 say what now "a taste, whats a taste" she says it was just some yogurt and that i was over reacting!! I'm over reacting??? When you give my 2 month old son table food?? I tried so hard not to explode but this was the last straw we went into a good ol yelling match!! I told her she's not allowed to babysit again until she learns how to follow my rules for MY child!! She tries to over power me on everything, i dont know how we can solve this problem!