Sweetie, I'm sorry your friend is behaving this way My guess is that she avoids talking about your son Josiah as she doesn't know how to deal with the loss/grief you're going through. Especially now that she's preggo AND expecting a boy, she probably thinks that you might get upset. My own brother (I only have one and he's my only sibling) never acknowledged Joshua's passing. EVER. Not a 'sorry', or 'I don't know what to say' or whatever. I couldn't look at him for months and then forgave him as I guessed he didn't know how to deal with it. My SIL later told me that he told her that he didn't say anything because he didn't know what to say.
Vent away Mummydreamer But I do agree with Beata. I think that maybe she honestly just does not know how to act or what to say.