Lenore develops REAL feelings for Hector.

Does Hector love Lenore?

Lenore was also shown as genuinely caring for Hector, protecting him from Carmilla's anger and rushing to his defense during Isaac's attack on the castle.

Is Lenore tricking Hector?

Lenore uses sex to get Hector to vow his loyalty to her, and along with a magical ring, Lenore is able to fully manipulate Hector to do her will. She even creates identical magical rings for her sisters, so that the creatures Hector creates will be loyal to all of them.