My sister let’s her daughter eat a banana but she smeared it on the couch but she had left it cause…

My sister let’s her daughter eat a banana but she smeared it on the couch but she had left it cause I was sitting in that couch with the baby while he ate banana. If it was the other way around she would nag to everyone saying how I didn’t clean it. But my other sister asked what this was on the couch and she was like idk. Smh this is why I told my husband I wanted to try to get a part time with a full time Cause it’s just unhealthy here. My sister with the kid was my day god parent but after her constantly being rude to my daughter who was suppose to be her goddaughter I was like nope I’m never rude to her kid who is just my niece she should be nice to mine godchild or not she’s a toddler learning her boundaries