Somewhat off-topic, but 'Hillary!' might be the worst nickname for a candidate I've seen on this forum. Ever. It was funny and relevant for ¿Yeb? because that was literally his logo. But trying to use the nickname for Clinton as well robs it of all context and the entire reason why Jeb was even called that so constantly.
You mean to say that Seriously? has a strange habit of welding punctuation onto words that shouldn't really have them?
I seem to recall Hillary Clinton using the "Hillary!" moniker herself, perhaps back in her 2000 campaign for New York Senator. This article seems to confirm that - but I can't find any Hillary! images online. Thar might be because the Internet was in its infancy in 2000 or it's just plain impossible to do a Google search for a term that ends in an exclamation point without also getting results for the term without the punctuation mark.
Jeb actually pasted it onto a sign and used it for years. Hillary hasn't done that.
I seem to recall Hillary using "Hillary!" on at least some signs during the 2000 campaign for New York Senator, and perhaps later. I remember it being as dumb as the "Jeb!" signs were this cycle. If you need to add an explanation point, you're not that exciting a candidate.
To be fair though, do you really expect Seriously? to actually know that happened?