That's funny, Micheal Bay's feelings must have been really hurt when Megan said all those horrible things about him (to pass her off as a joke in the dialogue when she did help out Bumble Bee in the 1st one) ...or maybe in her own ego she wanted nothing more to do with that franchise so she did everything she could to get her contract torn up. BTW, anyone gonna see Passion Play?No. But they mentioned her indirectly a couple of times and got in a few small digs.
In the novel, she left Sam right after ROTF. She couldn't take it anymore. Yes, right after they pledged their love for each other and survived their second giant robot apocalypse.
It would have been better if she died as a Decepticon reprisal between films.
Mikaela had bigger balls than Sam and wouldn't simply leave because the robots got to her.