Hi i hope I can give you some hope. I have been diagnosed firstly with adhd last year and now with autistic spectrum this year after 2 separate evaluations. I am an adult in middle age.
Yes it is possible to have both I now know! I have impulsivity hyperactivjty and scatteredness of adhd, but I also like certain routines, find change difficult, and struggle socially.
I wish someone had diagnosed me age 6 because I could have received the support i needed and have much better self esteem than I do now in my 40s!
It is good news for the future for your daughter and I hope you both get the help that you need so that she can flourish as an adult.