Stolen baby name?! Maybe I'm just petty!

So this is a rant. My little sister has a best friend, who has been a part of our lives since she was a baby. This year when visiting back home in October, I had shown my sister and her friend our family tree. On said family tree it has our great grandmothers name "Alwynn". Fast forward to today when my sister's friend gave birth to her baby girl and named her Alwynn. 😒She knew I had planned to name my future child after my great grandmother because I stated it's what I was planning on doing while showing my sister our heritage. I am hurt because my sister knew all along and said nothing to me. I am super sensitive because we've been trying to have a baby for months and she just blinks and she pregnant. 🙄 I know I'm being petty, I guess Alwynn is a pretty middle name. 🤷🏻‍♀️