Separation advice for a friend?

A friend and her partner have separated(not married). They both own the home equally and there’s a mortgage on it. He won’t leave the home (I know he has that right!). They have a 3 year old and she is due to have another baby any day now. He is paying the mortgage the past year, she is not working due to lack of childcare. He won’t give her a penny, won’t contribute to childcare so she can go back to work after the new baby and because he is self employed she is not entitled to anything from social welfare, even though they are no longer together. Can anyone point me in the right direction for low cost legal advice in regards to the house, he has said he will buy her out but will not sell. Conflicting information online about how much she is entitled to. And also does anyone know of a social welfare payment she could get? She hasn’t worked in over 2 years, has zero income and he won’t give a cent