Is Yoon Hee doomed to be used like a fool?

So far we see Yoon Hee being portrayed as a naive poor woman that's being used by other, stronger characters. I wonder if that's gonna change.
I think the writer didn't need to explain that Soo Ryun planned that encounter at the cinema - it was obvious.
Anyway Soo Ryun seems to be ready to do anything for her revenge.
On the other hand it seems that Yoon Hee might not be that innocent at all...