It's love really (spoilers)
I think Chloe was truly in love with Catherine. Right from their first meeting in the women's room, it seems she got interested. Being used all her life and perhaps coming from childhood trauma, manipulating was all she could do to try and seduce the object of her affection.
And if Catherine was not so repressed they could end up together or have a relationship. I was so sorry for Chloe in the end.
Just my two cents.
________________________________
Obadiah Obadiah, Jah Jah sent us here to catch vampire