Haha yes!

Hmm for Jenna's answer:
"Twitter? Who uses twitter anymore? Come on, Snapchat and Instagram is where it's at."

But to answer the question, Jenna's twitter handle would probably be something like Ironic Gab. Not only for her cheerful talkative nature but an anagram of the first two or three letters of the main ferromagnetic elements (sadly not the chemical symbol).

Ir-iron
Ni- nickel
Cob-cobalt
Ga- gadolinium