See, I’m cool with Character X getting “kidnapped as a child” and Character Y-who-is-X’s-sibling stumbling across them years later as a method of combing a couple series for a crossover. It’s soap opera cliche, but can be done well.
My problem is when the argument for why Character X has to be Character Y’s younger missing sibling banks on the first-name-middle-name thing; in this case, “Buffy Anne”. Yeah, it’s improbable that there would be two Buffy Annes out there, but speaking from experience? It’s not impossible.
My name is Samantha Leigh.
One of my friends in high school was also Samantha Leigh.
Spelled exactly the same way, our last names had the same number of letters, our hair and eye color were almost identical (excluding when my hair was dyed of course), there were only a couple inches of difference in our height, and we had the same body type. I don’t remember her birth date (seeing as I haven’t spoken with her in nine years), but we were the same age.
Improbable but not impossible. And my god does it irritate me when people use that as the primary reasoning for why it has to be the same person. I know, I know, this is probably a Sammi-Leigh-Only issue but GAH!!