My in law drives my crazy forcefully assisting to feed my child again after dinner late

I feed my toddler dinner at 6pm and try to put her asleep at 8pm so she get used to sleeping at this time instead of staying up late at to 12. My toddler is the type to fight to stay up late since she was a newborn. Her father’s mother wants to feed her every time at eight then sleep after. To be safe I wait 2 hours of digest then go to sleep to avoid acid reflex, stomach aces, or heart burn. His mother didn’t want to stay up late and put her to sleep. So I was the one staying up super late all tired watching my daughter. I have told her many times why I don’t feed her at night. Then she use profanity in Spanish. It’s hard to speak to her because she is heard headed and only knows a little of english. The one thing that got me mad is that she calls her son as working to bitch at me.Can some gives me advice for this situation please because talking out is not working. via /r/Parenting https://ift.tt/3izr3Pe