I feel your pain! I have a coworker who sounds just like yours. She's useless and always needs help with something.

I missed work yesterday because I was feeling very sick, so I'm trying to get caught up on everything and one coworker is being super annoying and unhelpful and my boss is piling even more on me than usual.

I think about quitting this job every single day. I hope I can hold out until the day ends without going crazy. I've thought about giving my notice already. Ugh.