Mother in law problems...HELP!!?

My husband &, I have just had our daughter 2 weeks ago, I had a csection, so she came down to help, but she is changing the way my house works! evrything about it, and taking over when it comes to decisions about our daughter,..such as keeps feeding her over and she projectile spits up...everytime she even opens her eyes she is shoving a bottle in her mouth.....So much for routine,.,.And today she bought things to put up in MY house....Im sorry but this is all TOOOO much for me to handle! What would Ya'll do???