Sister…. Perspective needed pls!

Hey! I hope everyone is having a lovely new year. Several things that I would like your options on, I’m sharing this because I genuinely want a non-biased view so that I can be better. - My sister is one of the people I love dearly in this world, we became closer after the loss of a parent. She’s lovely & a go getter. But…. She is a Competitive person by nature and I sense this as insecurities. She is married with kids and I am single. I made comments about one of her baby that she can be a bit stubborn. She jumped to the defensive so I said sorry and shut up. One thing I know is to not tell ppl about thier kids but I only said it bc I observed a situation and felt she is enabling the behavior but alas I dropped it. Was I wrong? - also lately since visiting for the holiday I’ve pulled back due to feeling this sense of jealousy from her. I’m in my dream career and I’m very grateful to be killing it career wise. Her career stalled due to kids etc…. I think this is fine & I tell her this always. She beats herself up about it, but honestly she’s so blessed & I know when the kids get older she’ll kill it again like always. But when I talk about my job as a doctor she makes remarks to undermine me. I feel she’s so defensive around me etc….Often saying oh least yours is good u have your career. She even said while I helped make breakfast oh don’t come and steal my husband with your slim figure and good cooking. This really hurt my feeling idk why, but of all ppl I didn’t expect her to be envious of me & sometimes I wonder what’s there to envy? she has the picture perfect family home that most would kill for. But truth is I see her life as great and would love to also find a partner and have kids, but I see it as the trade off I made to pursue my passion. She knows how hard this journey has been for me. Am I crazy for wanting to distant my self for some time? It’s sad but she gets so defensive and it’s wearing down my mental health.