I already explained this a few posts ago. However, you need to click on her skirt, not the money. Once the skirt scene reaches the final stage, then you start on the money button.
Well, here's a new thing I found with Shantrel :
1. Skip school for a whole week + Brenda's courses unlocks a new scene with Shantrel on sunday nights. When she's mad after you, the MC will drop down her panties....Watch out though. To progress in this scene, you have to pick both choices and make them progress. The secret in this version is to watch out for the " joke " or " do not joke " options. When you'll unlock those scenes, the " having a bad dream " option on mondays will show a hidden scene.
+ you'll have 3 more choices when she's in the red dress " stroke the panties ", " look at the ass" and " Touch breast". However, I don't know if those scenes can be expanded because I can't see the " new later " message. Try it out and let me know what you think.
Edit: about the sunday nights events with Shantrel, make sure you've got high impudence, because it drops drastically when she beats you.