Angela and her elder sister Claudia* had never been especially close. As teenagers and young adults there was jealousy, especially when Claudia’s social life and career blossomed, and Angela, a stay-at-home mum, felt left behind. “As we got to our 20s, she seemed to resent my success, especially once her marriage broke down,” Claudia explains. “I knew my parents wanted us to get along, so I’d try to make allowances. But whenever we met up, she’d find a way to sneer at my lifestyle, undermining me at every opportunity…”
https://www.telegraph.co.uk/family/relationships/toxic-sibling-relationship/
