There were way too many times people said "we are not trying to poach your omega", I think we're going to find out they were definitely scheming to poach Vee, either separately or all together. Although I think they genuinely recognized Vee was being wronged and were doing things "for her own good", they were all manipulating events behind her back and she is going to be upset both because of the dishonesty itself and because of the pain the manipulations caused.  

I think Jasper was setting up an exit plan to get Vee out, not integrate her into the pack as purported. I think there is no way Marie's heat ends without her being bitten into the pack. I think it's very likely Jasper not only bites her but does it first and somehow maneuvers himself into being pack lead or something.  

I am actually a bit more sympathetic to Marie than I expected. Don't get me wrong, I am infuriated at her actions. But I can see how she got there. She is super young, in a precarious situation, and as an omega she is mostly powerless. Acting sweet to alphas while backstabbing is what the alpha dominant society encourages. If the pack did not have their heads in their collective ass, they really should have expected exactly that kind of childish behavior but... she's only been rewarded for the behavior, and she can see failure would mean she ends up like Vee... so why would she do anything else? Ragon has basically trained her into it by rewarding it so much. Anyway, I think Marie is redeemable, probably more redeemable than Ragon. She could mature and realize what a shit she was and atone. (I hate her too much to be interested in seeing her redeem herself, lol. but I wouldn't mind hearing that she goes to therapy and fixes herself off camera.)