is Helen Magnus canonically bisexual?

In the last couple of minutes I've seen two different people assert (in relation to the Sanctuary Cage Match thing) that Helen is bisexual. Where are they getting this? Was it actually on the show and I missed it somehow, or is it word of producers who are too chickenshit to depict queerness on the show but want the cred anyway god, or is it fanon?

I'd very much like Sanctuary to have canon queer characters, preferably more than one, but I'm wary of fandom's tendency to assert things as canon that . . . aren't.