I'm basically going to tell a group project member to fuck off after she tried to apologize for not doing work
What was the issue?
It's a group project for university. She can't even do her basic work
It makes sense to be frustrated, but sometimes things come up. Maybe you could ask her if she needed support to help her complete the assignment? Try not to make judgement about people in this way.
I can call her a slacker.
You can also choose to be kind and understanding instead of judgmental. If something prevented you from completing your work, wouldn't you want people to be sympathetic to your circumstances?