Hi Giselle
Thank you for your question, unfortunately it is outside the remit of this forum.
Your friend needs to contact their local Welfare Rights Organisation who can take all their circumstances into consideration, such as why were they sanctioned? was it the first time?
You can find your local Welfare Rights Organisation to help you with advice by clicking on the link below and putting in your post code, it will then come up with a MAP with a list of agencies.
advicelocal.uk Gary