She uses it effectively.

Rachel has gotten up from the desk and removed her panties and skirt, and then sat back on the front of her desk, but this time with her legs spread a bit. Melissa is drawn to the older woman reclining so invitingly on her own desk, so she comes over to the older woman. Rachel tells her young apprentice, “Get the sex oil from the bag and rub it into the cock, so we can have some fun with the toy.” Melissa does as she was told and rubs the dildo, coating it in shiny sex oil.

The young woman is aroused by the combination of the smell of sex, the situation, and the suggestion drink from earlier. Her inhibitions are lowered quite nicely, and so far she hasn’t done anything that she hasn’t wanted to. Rachel says throatily, “Why don’t you bring that toy of yours over here and we can see what we can do with it.” The older woman then starts playing with her ready pussy, inviting the young woman closer.

Melissa stepped into the gap of Rachel’s legs and the dildo was grasped by the older woman, who then guided it against her pussy lips. Then she released it and told Melissa, “I’d like for you to put it in me – as if you were a guy.” This excited the young woman and she grasped the dildo and deliberately rubbed it along the slit until it started to enter Rachel’s pussy.

The older woman gasped as Melissa pushed the dildo in slowly until most of it was in, and then she pulled it almost all the way out. She grabbed Melissa by the hips and pulled the cock into her as she whimpered in frustration. Melissa said innocently, “I thought I was doing what a guy would do – tease you.”
Rachel gasped again as the dildo hit a good spot and replied, “You learn fast.”

Melissa is unable to get the pace that Rachel wanted, so the older woman controlled Melissa’s hips until she got the hang of it. But then Melissa deliberately slowed down when she could tell that her prospective boss was getting real close to orgasm. The change of speed was driving Rachel crazy with wanting an orgasm with this sexy young woman.

Rachel moaned, “You are a total tease – you know that, don’t you?” to which the young woman replied, “I try to please where I can.”
Rachel suddenly blurted out, “That is exactly the attitude you need for this job. You figured it out!”
Barely ten seconds later Rachel pulled Melissa’s hips into her own and held her there as a good orgasm started to rush through her sexy body. Melissa could feel the nub pressing against her own clitoris, but it just wasn’t doing the trick for her.

Rachel’s orgasm was a bit muted as she placed her face into the young woman’s shoulder as she hung on and buried her face while her lower body spasmed and twitched as wave after wave crashed through her body. Once she was done she pushed Melissa away from her and the dildo withdrew with a soft ‘schlorp’ sound. Melissa looked down and was intrigued to see that the dildo was coated in pussy juices from Rachel’s orgasm.