Luckydip
Welcome to the forum, you might want to have a look at the following FAQ which explain where everything is
Welcome to Benefits and Work You don't actually mention the benefit?
Both our ESA and PIP Claim guides have a section that covers the assessment process and the questions she is likely to be asked.
I would contact the Assessment Provider about their providing a Translator for the assessment as you may have problems speaking on your mother's behalf.
The letter inviting her to the appointment will have a list of the things she needs to take, it is usually identification and her medication.
If you have further questions then please reply to this post and we will do our best to help.
Gordon
