Gender reveal problems

Ashley • Hi!! We have a 4 year old daughter Liliana Sue n our 🌈Savannah Grace is almost 10 months now!
So we just scheduled our gender scan for Friday the 18th and want to have a reveal party that weekend with friends n family! Turns out my sister and my nieces ( well one of them) can't make it due to cheer competitions that weekend. Is it wrong of me to still want to do it and maybe just FaceTime her during the reveal?? We have been dying to find out and would love to know before Xmas! Does this make me a horrible sister?!?