Hi Shoprivat
Welcome to the forum.
You might want to have a look at the following FAQ which explains where everything is;
www.benefitsandwork.co.uk/guides-for-claimants/faq/forum Your mother will not be able to apply for DLA as it is now closed to new claimants over 16.
You did not say if your mother was of state pension age or not. If your mother is below state pension age then she can claim PIP;
www.gov.uk/pip,
If she is over state pension age then she would have to apply for Attendance Allowance;
www.gov.uk/attendance-allowance Gary