It could have been so good. The MC could finally stop being such a bitch and enjoy himself. The game is long enough where it would make sense by now. He could have spanked her and left her ass more red and sore than Red or Darnell did. That would have been great.
Or at the end of the update when you fuck Mary in his room. And she thinks he's fucking Becca and tells him to keep it down. Why not make him spank Mary and have her too curious not to check it out, and she sees he's actually with Mary which also turns her on. Great potential with her just wasted. Now she's just competing with Darnells sister and it's boring.
There were soooo many great opportunities to explore her path more and put more scenes with her in various points of the story. Like when the MC discovered she was a camgirl, that could've introduce her arch perfectly, making Darnell and the MC compete to see who could corrupt her first. In season 5, she's just there, with nothing going on. When I heard there was going to be a NTR route in season 5 I thought it would be all about her, since, you know, she's actually one the characters that we see being closer to Darnell. But no, yet another opportunity lost.