Yup.

I work with a colleague who is about as ungrateful as it gets.

We both teach Senior High School.

Whenever I put together resources for my class; I always share with her. We're talking like on a daily basis share everything with her. I feel like I'm carrying my class and hers - she does 0.

I know she used the resources / lesson plans etc etc etc - I've seen it.

But she never says thanks / acknowledges / replies to my emails.