My MIL has made it a habit of coming over unannounced & the worst timing! Always during nap time!

I have a 2 year old and babysit another 2 year old & 6 month old. I finally had them all down to sleep at the same time and was so excited to finally rest & get some peace and quiet. Then MIL comes over with husband brother & his daughter totally unannounced and came in without me answering the door! I told them to please leave the kids are sleeping & this is what his mom texted me

I never received any calls or texts, and she usually doesn’t call or text before hand! We are supposed to go for dinner tonight but I honestly don’t feel like being around her when she’s never sorry for interrupting my day, it really stresses me out.