Hate or love?
Well, the way I see it, Helena doesn’t hate Thomas. However, she’s FAR from loving him. Their little dance that ended by Thomas licking her neck and her calling him a creep and then her throwing that meatball at him, that was more just innocent flirting, than confessing her love for him (as a lot of fans see it). And she did say that she only dates good guys, so Thomas being on the bad (well more like dark gray) side is certainly something that’s preventing Helena to date him or even allow herself to have feelings for him.
However we see in Birds of Prey Vol. 2 #11, that Hel is done with helping him (after he manipulates her), so I doubt she’s gonna wait for him to become good or give him a chance if he comes chasing for her.
So yeah…tl;dr: She doesn’t hate him, but she doesn’t love him either. She tried to nudge him on the right path, but he didn’t want it enough so she decided to stop wasting her time.