I'm thinking of abandoning someone really important to me
Why do you want to abandon them?
She's such a drag and I've had enough of her
You shouldn't abandon your friends. Maybe you can talk to your friend about her behavior or just take some space from each other. You can still maintain your friendship without abandoning her.
Nah. I'm going to reinvent myself, you never know what's going to happen.
Can you imagine how hurt she might feel if you ghost her? She might be going through a really tough time right now and being there for her could make a big difference.