Hi Christina! I'm so sorry to hear you have been going through this. I'll be honest. I am a taker. I've been told this and am now coming to terms with it. I don't want to be a taker, but I don't seem to have a lot of control over what I am.
However, I do not think being a "taker" means it is ok to keep taking from those who cannot give anymore.
My mother is a giver for instance. When I recently moved back home she tried every way in the world to keep helping me even if it was going to hurt her. I had to tell her to stop. I told her that I knew she meant well but that hurting herself to help me wasn't really helping me.
I know it's hard and I would never imply it's your fault, but working on making boundaries is really important when you are a giver dealing with a taker. If you make it clear when you can't do anymore and they still feel like you should then that is their problem, not yours.
I am learning to not ever be mad or resentful at someone because they couldn't help.

I hope that made sense.