I’m so sorry you’re going through this. It’s more than any parent should be burdened with.
Start with the Citizens Advice Bureau in your area. They will be able to help you with things like benefits, child maintenance
and legal advice if you need it. Also if you haven’t already, the Gingerbread helpline is really useful and can also help you understand a lot of the information out there.
I hope you find this useful and things improve for you and your daughter soon.
take care 🙂