I'm sorry you're going through this and understand how it can feel like a betrayal. However, one thing to keep in mind is the likelihood that your T did not plan this pregnancy. She's known for a few months but she may have only found out herself a few months ago. Many professional women often try to plan when to have their children carefully, but things happen - a lot. On top of that, there are a multitude of reasons why some women wouldn't know they were pregnant until a couple of months in months in. It sounds kind of dumb or odd, but everyone's circumstances are different and this can be the case for the most intelligent or self aware women. It's definitely not as unusual as some people think. I might be totally wrong but it's something to keep in mind when you're feeling hurt or betrayed.