Sensory processing disorder and autism

My fiance daughter is 9 coming up for 10 are these linked for example clothing material can't wear tights feel agitated scratchy skin can't wear glittery tops have to wear black leggings for school not part of uniform but have to. She gets panicky when left in the car while her dad or mum go in shop to pay for fuel she worries she been abandoned or there not coming bk also when im in the car with her she wants to get out to find her dad or mum to reassure herself there not gone. She always worries about the worst outcome and also she don't realise she has burnt herself till she goes red. Chews on her hair chews on clothing hoodie strings sleeves gets very angry at herself when she can't understand situations or do certain things she got told she could have learning difficulties but I have aspergers and notice some of the similar traits to what I have with the constant worrying for instance also her memory she always forgets what to take home or to bring to mine she struggles to remember I don't want her going through the same struggles I did her age why im asking for answers.