You do you man. If you have a certain "game plan" in your mind, or if for some reason it's important for the story that she's a camgirl, you don't have to make changes just because some of us don't like that. We'll just move on. You have exhibitionism as planned content, so it's not something that came out of the left field.
I just explained how that scene (the second event with Keira) made me feel about Lyn and the MC because it gave me a different vibe compared to the first release. It's pretty much what
DA22 said about the difference between wanting to romance someone or just fuck her.
I didn't like Keira either (too predatory for my tastes, especially towards Lyn), but you can reject her so it didn't bother me, but for Lyn to go for it just like that... it felt off. I mean, even if we accept all those things you wrote in your spoiler, if I was so enamored with someone the last thing I'd do is something that could possibly compromise any chances I might have with that someone. She has no clue how the MC would react if he "accidentaly" stumbled upon one of her livestreams, but she acts like she doesn't really care. Again, she just agreed to whore herself out and possibly have sex with Keira, although she's supposedly madly in love with the MC. Of course if you want her
to be someone who seeks attention from pretty much anyone and she just thinks she's in love with the MC or has a small crush and nothing more, that's a different story. Still not my thing, and that makes her completely unattractive to me, but it would explain her actions.
Anyway, in the end of the day it's your story, so you know what's best for it. Not all games have to be for me, so like I said, you do you and good luck!
*To complete my feedback about this update in general, I usually don't like minigames, but in this case I think it was implemented the right way and it can actually be helpful. It's an easy (optional) way to make some extra cash, not too complicated or frustrating and the time we are given to complete it is reasonable.