Something off about this episode.... Scripting??
Follow my thinking for a minute- production may have wanted some big drama to erupt and for Teresa and Melissa to be the last ones standing because that seems to be the narrative of this season. For that to happen there had to be a big fight- Jaq and Robyn played their roles by fighting with each other. After Robyn left, there had to be a reason for Siggy and what's her name to leave. Jaq stirred the pot like a good little Bravo soldier.
Siggy's tears may have been from her discomfort with the dishonesty of the episode. I can see her not feeling good about following along with a scripted story and not being truthful.
To play Devil's Advocate for a second, the Laurita's really need the money from the show, and would probably do anything to secure it. I still feel like Jaq sold her soul to the Devil to behave the way she did, and treat her cast mates and one time friends that way. I would rather sell my house and live a more frugal life than to disparage people in my life.