Yeah and that is exactly what I mean, there is a whole path full of drama and soul searching from Alexis while suddenly. Nah no claim I am just mad you did not tell me MC was here. Like Alexis is some freak that it was all in her head that Erryn was interested in Mc and put out some claim, just her mistake.
Same as with the blackmail, Erryn acts more or less like that tape is the most shameful thing that could ever happen to her as if she grew up in a ultra conservative environment.

That while she is the child of a single mother and her BFF Alexis, well we know what she did with MC at start of game.

It just does not really fit as an ultra conservative environment where those closest to her would be extremely judgmental of her.
Sure that tape is horrible and would be no help with her chosen career path, but as Avaron explained from her own womanly view the choice Erryn made is even worse as letting it come out in public and not only for her career that is still years and years away, but also immediately. The real weird thing is though that she seems unable to even talk about it with those closest to her or ask their help. Neither now or in past. Now pride might play a part (more likely the drama needed though) and not wanting to hear you were stupid, but neither Alexis, Emily or Melissa are portrayed as people that would shut out Erryn for something like sex with her Bf that was taped or in Melissa's case likely anything she ever would do.