I really hope if that happens, Ocean puts a Bella bomb in further down the line.
"You did it...with my MOM!?!?"
*earsplitting shriek as the MC tries to grab his severed manhood*
It's weird because I don't know how far Ocean is going to take Amber's questionable behavior with the MC.
Is he just teasing? maybe she has genuine tender feelings for our sullen edgelord as if he was a son?
or is she really just a thirsty bitch who may just ntr her own daughter... I can't wait to see how this progresses.
Hah ya, I have no doubt that's why the bit is in the game about MC going to have to carefully consider how he handles things with Amber as Bella is going to hear about it via whatever Amber puts in her notes. Doesn't matter to me though, I'm full throttle on Amber - I'll do my best to mitigate damage when possible with Bella as I don't dislike her character at all, but Amber is higher on the priority list.
On your other questions, I'm honestly not sure - I haven't figured Amber's motives / feelings out yet, she's pretty good at controlling her behavior and seemingly guarding her feelings - we'll have to wait for the cabin trip.
Had to quickly check the list. I think it likely that pursuing Amber won't be possible if she knows Bella has interest. She'll have a vested interest to "heal" her daughter and I doubt she'd do the absolute worst thing possible and steal someone who's healing her and can actually handle her without fear.
I've seen on Discord that Ocean has said most LIs (including Amber) will have multiple ways to initiate their romance arc. So you could be right that it may have something to do with Bella, although just because of the way the game flows from the beginning, since Amber has so little interaction, I would bet being close with Bella initially won't close off any routes with Amber as Ocean has to be thinking that probably 80-90% of the playerbase is going to have heavily invested in Bella early on in the game since she basically dominates the first several chapters in terms of LIs.
But Ocean has also said that you cannot be with Amber and be with Bella - Amber cares about Bella (obviously) and so if you're in a relationship with Bella, Amber is not going to entertain anything with you. Probably why Ocean made sure to have a scripted "break-up" with Bella in the last chapter - not just for Amber, but to free the player up to decide what they want to do with other LIs and not be hindered by any attachment so early in the story.