She needs to look into
ESA...used to be called sick pay. Comes in two levels...one for people they decide are ill but not too ill to work and the other for those the finally accept are too ill to work.
PIP...used to be Disability Living Allowance. This comes in two sections...care and mobility. Each section has different levels of payment depending on how much help the accept that you need.
Carers Allowance...paid to a person who cares for another for at least 35 hours a week and it dependent on how much that person earns.
Whatever she applies for she needs to get help completing the forms from a disability group. The assessors always try to deny or pay the lowest rates. There is a trick to answering the questions to make sure you get the level you're entitled to.
Mother of the Groom outfit woes