The Post OP deleted Background :My wife longer speaks to her family with the exception of her grandmother. She always used to talk about this toy - a turtle with a string that makes a bell sound when you walk and pull it. She said it was her favorite toy - and her grandmother recently found it and gave it to her.Okay so after her grandmother gave her the turtle - she explained it had actually belong to her father and then she had used it as a kid and her brother had used it. My wife was so happy to see her favorite toy - she immediately wanted to restore the wood turtle to it's former glory. She's 4 months pregnant and had fantasies about our child playing with the turtle.She took it to my mother for some help and then had to run to the bathroom (she's been throwing up everyday - multiple times a day). I was at work so everything after this is based on what all 3 parties have told me.During that time - my mom went to go check on her and left the toy on the table.My sister came in and saw the toy and assumed it was for her daughter (Marsha). She gave it to Marsha which was the worst idea ever. Marsha is 3 and is pretty much the most destructive toddler to ever live.Marsha ripped out the string, destroyed the little bells and broke the plastic feet off right away. (She likes to take things apart.)When my wife came back in - she started crying and sobbing. Marsha started screaming in response and my sister got upset and tried to calm Marsha down.My mom and my wife tried to pick up all the pieces but the turtle is in pretty poor shape and will never look how it used to be. At this point my wife tried to go home with the toy - but my sister got pissed and accused her of stealing the toy. My wife explained that it was her and asked why she would grab the toy from the table and my sister said:"In this house - any toy that passes that door is my daughters. Don't bring your crap her if your just going to upset her by taking it away."So my wife snapped and said some uncalled for things to my sister (this is why your husband left you and that she bet her ex husbands new wife raises a better daughter - so that's why he chose that family over Marsha and my sister) and vowed to never let my sister see our child.Somethings to note:My sister also ruined my wife's baptism outfit that she was saving my stealing from our home and returning it ripped. She also ruined my wife's wedding dress (which was kept at my mothers house for alterations) by taking it out and letting the dog pee on it - then trying to wash it off by soaking it in the tub.My wife knows my sister is currently seeing a therapist to treat her depression over the divorce.I feel my wife is right to be angry - but is out of line with the things she said to my sister and about marsha. I want to repair their relationship for the sake of our future child and for the sake of my family.My sister has been blowing up our phones non stop.tl;dr: sister fucks up a lot. wife explodes. cuts deep.