Need advice.

My husband five years ago made a little girl with his ex-fiance. He stepped up and they moved in together. He was 17 she was 15. This was an unplanned situation. The girl didn't work, cheated, and constantly avoided him other than for a paycheck. They broke up on and off for three years. Everytime she left a guy she came back then would leave him for someone else. If the guy didn't want my husband around he didn't see his daughter. Everything has been her way or no way. She would always harass him about child support and trash his name to everyone and say false things about him when they were apart as well. Well she is remarried, 22 4 kids(his daughter, one adopted, three are her husbands). She hasn't changed.

Even years after they split up she would "lose it" if he dated a woman. He met me 2 years ago and she instantly starting saying awful things about me to him and others. She refused to let me around their kid for like 6 months.

He only saw his kid 2 times in 6 months. Started "a scene" at Walmart after 6 months because he was a bad dad though she told him he wasn't to see his daughter or contact her or he would be charged with harrassment.

Agrees to let him visit his daughter again. I can't be around. Let's me around after a month or so.

We have spent 2 years, 1 married, 1 not fighting for him to be in his kid's life.

She is normal one minute and kind then a cunning and manipulative the next.

He can't call or video chat his kid and sees her only with her mom's supervision and 2 hours every other week. She has only been to our place with his daughter once. He recently contacted DHS because at the last visit the place was filthy dirty and the kids were and she was feeding her infants mountain dew from soda can.

One is a preemie baby she almost nearly just lost. DHS investigated. nothing happened. She now claims she is moving 6 hours away and he is not allowed back in her house.

Her or their daughter is always ill and had busted out her teeth and broke her arm before she was even three.

The last visit she still fed her 1 year old, 3 year old, and 6 month and 5 year old children mountain dew. Her 1 year old just busted open his head and needed stitches.She let the child and toddler run threw rain puddles in the rain barefoot with no jackets or barely anything on in the rain at the park. He pays all his child support and fights to see his kid and offers to support her financially all the time.

He fights to make sure times are set a week before their visitations. Legal aid won't help. Lawyers won't start a case without $1000 dollars and up. We have spoken to four. He's on the birth certificate. We have driven in bad weather, financially sacrificed to make sure he sees his kid and put our own health, safety, time, and money on the line. If he misses one visit he is a bad father and he cares more about his "dumb bitch wife and new kid" is how she puts it. Overall, what do we do?