So my sister was in a relationship with her baby daddy. They have three kids together. He’s an amazing father even she will admit that. He recently left her for another woman and still wants to be in the kids life and provide for them. The day after he left her she went and filed for child support. They were arguing about it when he came to pick the kids up and she asked my opinion and I told her it was wrong and unnecessary. He has no issue helping and buying what they need so I told her it was immature of her to go and put him on child support. Now she’s mad at me