Assessment - questionnaire for parent/relative?

I had the first part of my assessment today. I don't really have anyone that I would like to take along to the second part or ask for their input, but is there a questionnaire for parents or relatives that is often used that I can download/read somewhere? I can't tell my mum that I'm doing this assessment but I am wondering if I can ask her some questions without disclosing what it's for. But I don't know which questions.

I'm quite stressed about the whole thing and keep switching between thinking I am wasting their time, I am not autistic, and thinking this would explain so much. But then I think of things that I did as a child that are not stereotypically autistic and then I think I must be wrong.