Does a mortgage get paid on unemployment benefit?

Hi,

My ex was getting 50% of the mortgage paid whilst she had the children living with her.

Will she still get this paid now that she is on her own?

I am concerned that the mortgage will get into serious arrears and need advice.

She has been claiming since autumn last year, although probably has to pay a lot of it back as she was claiming for the children whilst they were not with her (have been with me now for over 4 months)

Many thanks.