It's a pathway to support in school.
It may mean she gets support in class, or extra time in exams with a quiet room for example.
Access to work schemes are a thing for those diagnosed with autism and ADHD.
Also, reasonable adjustments have to be made by law in the work place to support her in her work role.
A diagnosis will help her understand herself better, be kinder to herself, give her a better chance of strong self esteem.
As someone diagnosed as an adult I wish I'd known sooner. She will know she's different whether you get her a diagnosis or not.
Being diagnosed may mean you get concessional entry to certain places for her and carer entry for you. A little thing but it helps. She may be entitled to a free bus pass, a rail card, etc. As I say this isn't a big thing but as a family were I've and to quit work to care for my eldest who is on the spectrum every little helps on a very tight budget.
It may mean she is more "looked out for" socially and emotionally by those around her. I'm only just realising and accepting now at 40 that I'm more vulnerable than my NT peers. 😔 I've been abused in every possible way throughout my life. It's a hard fact but true. Would my friends and family have stepped in more if they knew I was autistic and vulnerable? I'd hope so.
Direct payments help people with diagnosis or needs. My son has direct payments and this pays for a carer to take him out 1:1 in the local community. Means he's less isolated.
I'm autistic. My son is autistic. For me I can see no downsides to us both being diagnosed.
As an autistic woman I feel like I've finally found my tribe. I feel a sense of community and support and understanding. And I am finally kind to myself and living my life to what helps me rather than what is expected of me.