Family drama

Hello. I am currently 28 weeks pregnant with my baby girl. It’s my first. I am currently living in a new country with no friends or relatives around me, expect for my husbands family. My husband has got a "foster mum", which I used to love and appreciate. But one day she told me that my husband wouldn’t be present during the birth of our child. She said it was because he didn’t like hospitals and such. When I replied that I understand that, but then again it is his baby and that he would be present regardless. Then she replied "he wasn’t there while I was giving birth to my son." This made me very uncomfortable, but I didn’t make a big deal out of it. Then another day when I was out with her she introduced me to some teachers of her daughter. She introduced me as her daughter in law, and the wife of her "son", my husband. Then a couple of teachers said "ohh, I thought he was the father of your children" and she replied "I am really flattered but no that’s my son" Now I am just too uncomfortable around her and I don’t know whether is because I am hormonal, or that her behavior is just not normal in my culture. I haven’t spoken to her for a couple of months. Why would she compare herself with me, when it comes to fact of whether my husband will be present during the birth of our child? And why would she be flattered that someone would think her "son" is the father of her children!? Am I overthinking this?