Hana Gittelman and Candice are two different people...

[Mixairian]

Wireless and that Illusion girl are two different people, that is all.

Evidence #1: Watch carefully, they look and sound different. Not to mention they are different actors.
Evidence #2: Read the online graphic novels. They're good and relate to the main story.
Evidence #3: When the hell did we get this awesome icon?!

(I'm sure most of you knew this but I had three IRL friends make this mistake already so I just had to put that out there.)

 

[Parker]

Where did that wi-fi gal disappear to, anyway?

 

[He-Man]

 

[Le Diable Blanc]

The wi-fi girl helped Bennet plan Claire's escape. Like the original poster said, you should read the online graphic novels, they tell a lot of little things about what happens in between episodes.