Anyone experienced in child custody issue? Could use advice...

Board 8

A friend in florida just left her abusive bf and was gonna move up here to the midwest.

She of course was taking the 3 year old daughter with her to save her from that life, but he filed for paternity today... so she considered running and hiding for 6 months but... is there any good options here? I find it hard to believe florida courts would care that much and they'd probably make her stay in the state to share custody... even though he doesn't want to be a fucking father he just doesn't want her to be happy and wants to control someone bc he's an asshole

But anyway, this situation is extremely upsetting and I feel helpless... I wish there was something to be done. They shouldn't be forced to be stuck in florida, nobody should!
I don't kill... but I don't lose either.