I would definitely encourage you to break things off with this person. Her repeatedly saying things like “I hope you have a nice life, goodbye” is triggering and hurtful to you, it would hurt and trigger me too. Can you tell her you are no longer able to be her friend, but you’ve enjoyed the things you’ve shared together. Or something like that. It sounds like this friendship has become harmful to you. There are people who don’t engage in these behaviours and who you will find will be healthier friends for you. Keep posting and let us know how you get on. Thanks for sharing