I love how anytime anyone acts a little outside "the norm" people automatically assume it's drugs.
People cannot have quirky personalities anymore just on their own "there must be drugs involved" hmm?
I have a friend who has a bit of a nervous condition triggered by social settings. Makes him fidget and shake. Great worker, helped train me. New supervisor got ahold of him and let him go for "suspected drug use" because he wouldn't stop fidgeting in a tense situation.
*shakes head* Jenifer Lien could have been "let go" for any number of reasons and honestly it just doesn't matter. I'm not a big fan of her work on Voyager but honestly this sort of speculation is... pointless.