teenage sis in law is pregnant and we found out from Facebook

lisa
Sorry long rant about Inlaws.... 
My 17 yr old sister in law is pregnant. She's due end of dec. and we just found out from a pic in Facebook. I took one look and said honey did u know ur sister is pregnant. She's def a good 4 mos. to find out she's farther along than I am. I'm due in February her in December. She's tiny. when we visited the family in early July she was already 4 mos along I was 2 mos with our second. I was so excited to share the news especially with my mother in law. it was the first time meeting her ever, and her first time seeing her first grandson, and finding out she has another grand baby on the way. None of us had a clue my youngest sis in law was pregnant. And Well the vacation was great, we didn't end up taking to her boyfriend who just showed up last minute to join us on our vacation. hes way out of her league he's a 2 she's a 8. He's 2 yrs older than her, controlling, and a moocher. Pretty much good for nothing even though he supposedly had a job he contributed in no way the family vacation that the rest of us adults contributed to. He even had us pay for his gas and snacks. My husband couldn't help but play the fatherly roll as he's the oldest and he made a comment on how much better she could do and not settle with him since she was young and that was her first boyfriend. I can see he was getting nowhere with her as she's herd it all before. so I immediately told him we don't have any right to comment on what they do especially when we haven't seen them in yrs. and we needed to but out cuz shed only cut us out of her life completely. my husband apologized and told her no matter what if she was happy he was happy but I guess we were cut out anyway since we're the last to know she's pregnant at almost 8 mos and not even from a message but from a Facebook photo where I guessed she was and had it confirmed by her sister. 
Made me sad that my husband doesn't even get a courtesy call. he def wasn't the first to make remarks about her ugly boyfriend to her and won't be the last. Her mom, sister and friends always tell her wth is she thinking. On top of that we would of been there for her no matter what, and are so excited to meet our new nephew regardless of the situation. Apparently he was too late with his fatherly lecture anyway since she was already pregnant.
 Family is such a big deal to us and We want our babies to know there aunties and uncles and us our nieces and nephews. We live states away so we barely keep in touch as it is. This bums me out I can't imagine how my husband feels even though he tries to not act surprised and careless, I know he cares. So rude that he's left out in the whole family dynamic. We've talked to his other sister a couple of times she said nothing, nor did his brother who lives in the same state with us and see more often. Both new a while ago. And his mom didn't even bother. I think it's mean nobody cared enough about his feelings to tell him his baby sister was pregnant. Or congrats he's going to be an uncle. Since this is our first niece, nephew. Instead he found out from Facebook. he already felt like he's not included in the family. I really thought us going down there the past summer would changed that and brought us all closer. He's the black sheep which is sad because even without a mom and bouncing around from family members houses as a child, he's the best person ever. He treats me like a queen, and is the best dad even though he never met his own, he's seriously overcome so much and ended up being the best person I know. Even his mom was amazed at how well he turned out.