Severance

So my theory is that Helena setup Petey reintegration in order to get Petey out of the picture.

I think Helena, in an attempt to win her father's respect/attention/affection/etc tried to be fully involved with "Project Mark". However Jame refused and Helena was sidelined. I think Helena then setup Petey finding a way to reintegrate, knowing it would get him kicked off the project. Once Petey was off the project Helena would volunteer for Severance to replace Petey, both putting her on the the biggest project they had and furthering the severance procedure.

As a result I think Helena is aware of reintegrate and could reintegrate, but given it's current death track record, isn't likely to do so, yet.

I suspect she knows where the doctor is and will attempt it in a future season, but hasn't yet.

Cobel has been highly invested in Mark. Last season, she basically proved out what Drummond proved this season - that they showed no emotion and no personal connection, the two spouses put face to face; this time, it was Gemma only, showing no emotion in the face of her miscarriage. But Cobel did it covertly, and wasn't sharing results with the company (yet). She's helping Mark for now, but I suspect she orchestrated Mark and Gemma's entire hell 2 years back. She feels guilt, and she worked and lived with Mark. Complex emotions. But she probably genuinely cares in her twisted way.

I agree, I never sensed Helena this episode. My hackles were raised earlier in the season, but I didn't detect any thing this time. I don't think Helena would have made the same choices Helly just did.