Hold on a moment, people. What the Hell(y) are we talking about?

I'm starting to think I care a little too much about the debate surrounding Helena/Helly, but seeing the logical leaps people are making based on frivolous details like a facial expression or hand gesture, and seeing my arguments downvoted enough to be hidden is kind of annoying.

So, I was thinking...how does this make any damn sense at all once Helena hears that Mark knows about Ms. Casey/Gemma? This is Lumon's dirtiest secret, as far as we know. Taking a person's spouse and letting them think the spouse is dead? Pure evil. The moment Helena hears that iMark knows about this, it should be DEFCON 1 for Lumon. And from the looks of it, nothing has changed. Why would Helena be helping Mark look for her? They're supposed to be working on Cold Harbor, and instead, she's just letting him dig in to Lumon's biggest crime? Someone explain how that makes sense.