AITA for snapping at my sister during family dinner after she kept making digs about me still living at home?

Last weekend I had a huge argument with my older sister and I still can’t figure out if I was out of line. She has always been the golden child in our family. She’s married, owns her own house, and my parents are very proud of her. I, on the other hand, am still living with my parents while finishing my degree and working part-time. I don’t mind that she’s ahead in life, but sometimes it feels like she goes out of her way to remind me of it.

On Saturday we were having dinner at my parents’ place. Everything was going fine until she made a comment about how some people my age are already building careers and buying houses while others are still stuck at home. Everyone laughed but it felt like a jab directly at me. I tried to brush it off at first, but when she kept going on about how independence is a choice and how some people just don’t try hard enough, I snapped. I told her that not everyone gets to marry rich or have parents help them with a down payment, and that she needs to stop acting like she’s better than everyone else.

The room went silent. My mom immediately told me I was being disrespectful, my dad told me to apologize, and my sister sat there looking smug. Later she texted me saying I embarrassed myself and that I should grow up. I can’t tell if I was the one being rude for calling her out at the table or if she was being the asshole for belittling me in front of everyone.

Am I the asshole for speaking up to my sister after her comments?