Is it wrong that I'm upset that my kid won't treat my step "family" like family?
Why doesn't your kid want to refer to them like family?
Kids don't want to hear about something they aren't interested in... Besides, my parents are old fashioned people.
Your child should have more time to process that they have step-family, it's normal for them to not like them for a bit. But eventually they need to accept them for who they are, since they are now family. It's not worth having bad blood between family members.
It's annoying that she doesn't want to respect her half siblings and I can't talk to her about it.
Everyone will come into a family in due time. Everyone should accept each other as family even if it takes a little bit of time.