Roxanne was the goblin with a height complex, she was my favorite of the guests.Who is Roxxane? I played the guest character a long time ago and I don't remember them very well. Also the scene with Harumunia that you mention, Bez does the same.
Unfortunately, it's not the same with Bez- she doesn't actually put you into her panties first up, you can tell because the scene where you have the option to goose her comes about from MC noticing her panties shifted, exposing her back door.
That's the biggest indicator, but outside of that, Bez also has a much different feel to her- whether it's better or worse is irrelevant, but it is different. There's a very romantic overtone to the entirety of Bez's route, and even if she may try to deny it or insist otherwise due to her powers, MC and her are developing a relationship. With Haru, it's more just casual sex. She scratches an itch I have for non-psychotic, non-evil giantesses who regardless view you more as a toy than as a person.