It's the end of the world as we know it

The house has gotten really, well ... toxic whenever my mum comes home nowadays.
She is trying to get us to side with her using emotional blackmail.
I don't care how this thing turns out, I just want the family life I had before back. She's been devoting her energy to finding out who the Other Woman is, enlisting the aid of our family and some of the employees in our work.

But the problem here is, what will she do once she finds out who the Other Woman is and confronts my dad on this matter?
I feel like I'm in the middle of the play Death of a Salesman, only it's the wife instead of the son. I can't get back the life I once had. It's gone, particularly since now almost everyone in
my family now knows about the affair. It's almost frightening the things my mum was doing now. She went through his private belongings, took the money he had hidden in there, as well as the little blue pills (;) ) he had stashed away.

The amount of time and effort she's putting into making sure that she locks him down and makes him hers, to not stray, is frightening.

Whenever she wants to consult us about these things, I feel it's like dealing with heavily radioactive materials. Even if it's not intended, you're getting doses of a nasty poison you can't see.
She's using emotional blackmail on us, saying that if we're not supporting her, we don't love her.

I know we can never go back, but there's one thing - you make your own future.

I will do my best despite these adverse conditions.