My friend lied about having cancer and I forgave her. It’s been a few months, and I finally asked why she lied. But she won’t say why. I don’t know what to do, because we work in close proximity, so it’s hard to stay away. Not only that, but it’s not the first time. Should I forgive her or let her go? She is also one of my major anxiety triggers. Anyone with advice?
LemonVibe 
You said you forgave her, but you didn’t. Also ask yourself why you give her the power over you to make you feel things. You can not change her, but you can change how you react to her. Stop treating her as anything, but a coworker. Be polite, but formal. Do not engage in any actual conversation except for small talk. The more you do it the easier it becomes.