Not a very complicated one it seems.

Please. [Feel what I want say.]

watching her parents self destruction?
Her throat constricts as she tries to say it.
[Doc, I love you.]
The words just won't come, even though they're there in her heart, and she means them with every fiber of her being.
Why?
Fingers slide over his as she silently begs him to feel it in her touch.-

He can be a real gentleman, and he has no idea how it wins her heart, truthfully.
Why is she such a coward?
She can face demons and any other manner of supernatural being, but she can't tell this man just how much she loves him.
Why is she so terrified of being honest with him?
Does it go back to -

just wants to pretend to be normal.

Or just pretend.