AITA for refusing to give my mom a hug on mother's day?

I (14f) hate hugging people or being touched in general. I've always been like this it's always been non-negotiable. I've also been very open about this to my entire family. Recently, my mother (who's usually quite respectful of the rule), declared I need to give her a hug on her birthday and mother's day. I absolutely understand those are important days for her, but I can't get past the chilling fear at the thought of being hugged. Today is mothers day and of course my mom tried to give me a hug. I ran away to my room though, and pleaded for her not to. She tried anyways and got me for a second before I broke free. She asked why I wouldn't and I explained once again I don't like being hugged. "I know that, and that's why I don't do it often." Was her response. And yes, she's right. She never does it and just asks for those two days. But I still makes me uncomfortable. She left looking really sad and now I feel like a complete asshole, in addition to my dad and sister calling me an asshole. So am I the asshole?