advice needed..

I really don't know what to do. Basically in November 2015, my 14 year old sister lost her life to cancer, so it's still an extremely touchy subject. My dads best friend and his girlfriend are expecting a baby girl and they've took it upon themselves to call there daughter Sophia, after my sister. Now I'm currently being tagged in all sorts on Facebook and seeing Sophia all done my news feeds and everywhere I look. It's messed with my head so so much and it's just constantly making me upset. I don't know how to go about it or do anything?:( I just think it's completely unfair as they didn't think how it would affect me and my family at all.. just need some advice on what you ladies think is best to do? 
No bashing please!