And she is at it again

My SO's ex is still trying to scare him into not going after 50/50 custody. He already filed for it. But she is saying that she has done everything alone for 6 years. What complete bs. She used her grandmother and her bf because she didn't have a job for the first 5 years. My SO has always had a job and always paid child support and always took his daughter everyday his ex would allow her to come over so she could go out and party on the weekends or during the week because her and her new bf(now husband) both didn't have jobs. She is saying where we are now is an unfit environment for daughter and has accused us of letting people smoke weed in the house and around daughter. No one smokes anything in the house because my SO's mom does not allow it(her house) and no one has ever smoked weed around daughter ever while in our care. She came in the house one time to pick up daughter and said the whole house smelled like weed when there was me, my SO, his mom, my SO's best friend and his best friends son in the living room. We dont even smoke weed. And none of smelled weed so she made that up since she was the only one that could smell it apparently. But our place is good enough for daughter when she is sick because she can be bothered taking care of her sick child and it has always been that way. She keeps saying she wants to just go to mediation and not have to go to court so my SO should just agree to what she wants (which is full custody and child support that was calculated when she didnt have a job. which btw she makes more money than my SO right now with her job but still wants to receive the same amount as when she didnt. ) and acts like saying she is just going to have to take it to court is a threat. My SO has done everything she has wanted for 5 years and she thinks he needs to compromise with her(which means just agree because she wont compromise). The funny part was how she told him she will not allow him to have 50/50 custody of her daughter. I wasn't aware she made daughter all by herself because last time i checked it takes 2 to make a baby. And my SO is the father no denying that one ,daughter looks exactly like him and nothing like her mom plus he has already established paternity. And sorry miss priss but its not up to you if we get 50/50 custody it will be up to a judge so bring your ass down to earth and stop acting all high and mighty like you have final say. I laugh at the fact that she thinks she has done everything alone when she hasn't even been able to support herself up until a year ago and she thinks she has done everything for her kids. My SO and I have had jobs the entire time and have paid for daughter when she is with us not needing to use mommy and daddy to help us get by like her and her husband did while having 3 kids to care for. No we may not make enough right now to move out so we live at my SO's mom's house but have always been able to take care of daughter and her needs and ourselves. they live at her husbands moms house and they have always needed his mom or her grandmother because they were the money for them. She got lucky with her husband because he had 50/50 with his daughter from a previous relationship and his ex made more money(because he didnt have a job)so he received child support. They lived off government assistance rather than trying to get jobs for the first 4 years. But my SO is the deadbeat dad and her husband is the amazing father daughter has never had in her mind. I hope she gets put in her place because she really needs it. I hope a judge sees how manipulative and cruel she is to my SO and how she uses daughter to hurt him and that the judge allows us 50/50 custody. Sorry but i am beyond frustrated with this so called woman/mother.