Teenage Stepdaughter Not Visiting Anymore

Kallie
I feel so guilty and bad for my husband. We told SD about our baby on 15th April (at 15weeks I think, week before she was due down for the weekend and I was showing already!) which was a week after her 14th birthday. She said she was happy and excited and wanted to be a part of our lives with the baby. She hasn't come to visit since. I feel guilty as I made him tell her before she next came down feeling that she shouldn't just see me having gained weight! He's texted her every few days to no replies, we know her mother wasn't impressed either (horrible woman issues there) and he's tried to drop in occasionally without texting or calling first, with no luck.
She didn't even text him on his birthday this week!! I need some advice please!! How can I help him to feel a little better about this?