The plot thickens. It appears that SWM did know about the pregnancy.
I thought there were some statements very early on from either the HM or TS camp indicating that she did and that was part of the friction, but I maybe wrong but I thought so.
I think there were, but as the trial unfolds, their story has shifted. The latest version seems to be that TS flew to Bali to break the news to SWM and it was her violent objections to the pregnancy that led to her death.
Now, this latest version (SWM threatening to 'kill' the baby) sounds like something Soenardi coached them to say. The earlier version of the story seemed to focus on an argument about the hotel bill that included a racial slur that made TS go into a homicidal rage. Now the story has shifted to a self-defense angle, the slur is barely mentioned, but there are accusations of death threats to HM and Stella - and poor TS was in fear for his life.