We're not trying to be rude, but that was your last hamster. This is a different one, with a different personality, and she may be perfectly happy in a tank-style cage. Better yet, you won't be driven to dislike or possibly even rehome her. Now
that would be stressful for her!
As a last resort for the barred cage, you could try hanging toys lengthwise along the bars, like garlands. See if that distracts her or perhaps lining the cage with 1/4" mesh which she can't get her teeth through.
Negative reinforcement doesn't seem to work on rodents and flavours that we (and other animals) find nasty are like spice to them, even if it causes them discomfort. Go for the positive reinforcement and distraction techniques and then if that doesn't work I'm afraid that removing access to the bars may be your only option
