I know a few people like this. I usually try distance myself from people that are like that and try not give it energy. I don’t want label anyone but the ones that I come across are the ones can’t be happy for others but their own success..like it’s some competition. Usually people like this want a reaction or some type of validation like others mentioned. If she’s a close friend try to talk to her about it. She probably might not realize she’s doing it. If that doesn’t go well re-evaluate your friendship and see if it’s worth keeping. Honestly you do you. If your job makes you happy that all that matter.