'Don't judge the book by its cover’ is a popular saying that many of us ignore. There's a saying in my locality here that goes, having expensive attire doesn't always translate to a 'better position or highly important person'

I must say that I had similar experiences, I’ve met people who were considered “important” or “high-ranking,” and just like you said, once you treat them as humans and not as titles, the interaction becomes more natural. I remember once meeting a public official whom everyone around treated with fear and over-respect. But when I spoke to him calmly and casually, he relaxed immediately and we ended up having a normal conversation and this led to opening more doors than trying to impress someone. But not all highly respected people like talking casually to particularly when you don’t know them.

I'm sure your daughter is smart and she can find her way by getting the kind of respect she deserves considering her height which wasn’t her fault in the first instance.