Trying more:

You spend a while trying different outfits on, at one point, when you get to the tucking panties Victoria hops up and expertly repeats the same thing your mother had done to you earlier. The only difference is that this time the panties keep you more firmly in place than before.

She teaches you how to do it with the first set, but she still insists on helping you each time. Which makes it kind of difficult since you start getting hard each time she touches you.