It seemed to me the opposite. Quinn is interested in Josy and Maya. Quinn didn't want Josy to join the Hots, but accepted when she found out she was Tommy's half-sister. Besides, you're missing an important detail. Maya was Quinn's daughter. Quinn chose her as her daughter and gave her the most difficult tasks related to sex. What for? Well, the only explanation is that in this way Quinn wanted to corrupt her. She knew that Maya needed free training and took advantage of it. She instructed her to rub against the Tremolo, teased her in the rooster, hinting at sexy photos, kissed her in the pool and so on.
We know that other girls have simpler tasks. Why? Quinn knew that they were capable of becoming members of the restaurant without such stupid tasks. Well, maybe only Ashley, but she didn't know at all and in general joined the Hots only because Maya also joined there.