UPDATE: Mother in law is a liar!!!

Well a couple weeks after I announced I was pregnant, my MIL messaged me and was like I'm pregnant too, didn't wanna tell people because it would steal your spotlight. Well, she messaged me and my husband, with other members of the family with "ultrasound" photos saying it's a boy and shit. My ass gets sketchy because I see the ultrasound photos are different, and one of them says "20w1d" and I'm 20 weeks 2 days so her math wasn't adding up. I asked her if she was like 15 weeks to see what she would say and she said yeah and she's due December 21. She kept sending me "bump" photos and I decided to do my homework.  I found her fucking ultrasound photos on google!!!! What do you guys think I should do ..? I told my husband but I really wanna put her fake ass on blast to her whole family .. this is my husbands birth mother, he and his sister are adopted and calls his adoptive parents mom and dad. We we recently started to get into a relationship with her but I have always gotten bad vibes from her... my husbands reaction is kinda shocked . But his sister still believes her! 😡🙄