She is jealous of my smart thermostat

My youngest kid Juanita is jealous of my modern smart temperature control system. I think it’s the craziest thing, however Juanita is always jealous of me for some reason. I feel that it’s always been that way, ever since we were youngsters. I remember back when we were growing up, she got super mad at myself and others because I asked for a window device a/c for my room; She had asked for a bunch of baggy clothes instead of an cooling system unit, so her room was legitimately warm in the Summertime! Of course, even though our parents spent exactly the same amount on my window device cooling system as they had spent on her wardrobe, she was mad at myself and others for it. I tried to tell her that she should have been more in tune with her choice of spending money for her birthday, but she could only see the fact that my eating area was being cooled by the cooling system while hers was not. I was constantly telling her that it was not my fault that I had an a/c and she didn’t. It was no one’s fault however hers, but she was aggravated about that a/c in my room for years! And now that we are mature, she is doing literally the same thing. It’s not adored; I have somehow kept her from going out and buying her own temperature control unit. I have zero control over my sister sadly, but now, she’s all mad at myself and others because I have bought a modern smart temperature control system for my house. I’m really loving the modern smart temperature control, however Juanita is acting adore I obtained a modern temperature control just to spite her!
Help with indoor comfort