Does this coworker not like me so much? I didn’t do anything to her.

The other assistant (let’s call her Ms Ari) gave me a dull “Hi” after I said good morning and happy Friday. She didn’t even look at me. I don’t think she’s fond of me. Is it because I’m an autistic employee or she is annoyed? She isn’t like that with the other coworkers and cheerful with the kids. Like when I was explaining something to the them. She doesn’t even look at me and looks at her phone. She’ll give me a dull look. Kind of like the “I don’t like you” look. When I said by to everyone, she just didn’t look at me and continued to do what she was doing. When I said bye to her, Ms Ari ignored me. I am polite and say good morning to the boss and some think I’m being a kiss ass and trying to get something out of them because I’m a “special needs” adult. It isn’t true. I’ve been working at this place for almost two months. I like it but some co workers don’t treat me like an equal. I do my job and help as I can. I know at times she means well but she doesn’t have to be so hard on me.
Ms Ari one time scolded me off for asking a “dumb” question. When a student was reaching for her backpack and I asked if she wanted her water. She scolded, “NO! She wants to go home! You CLEARLY saw her reaching for her bag! Why would you even ask her that?! Give it here. I’ll put it somewhere so she can’t reach it.” She snatched it out of my hand. She didn’t have to go off on me like that. I was trying to help. Like when I’m not paying attention she is always on my ass and putting me in check because I “zone out”.
I know the other coworkers make sure I do the job and help but they didn’t go off on me like Ari did.
Does Ari not like me?