This actually gives us a lot here.
Twilight's Mom says she had a nickname for Twilight as she was growing up. One of them was "Princess Sneeze-zilla." So like Godzilla but sneezing.

Lol!
Also I love how Starlight describes this... saying that Twilight sings silly love songs to herself
"IF she isn't sneezing all over everything. She NEVER STOPS."Twilight's Mom responds by saying,
"She's always done that."Meaning Twilight's always been a sneezer!

What a great backstory in just a few lines of this episode. Twilight sneeze history!!!