Sadly, all pollsters put the state's senate seat as "safe Republican", so I fear her chances are very slim. That's probably also the reason why there are no polls there.
Yeah, it is considered a republican seat, but based on what? No polling was done, with Joe Manchin the state has also a democratic senator, Capitos senate seat was democratic before. There is no indication, why this race should be considered save for Capito. With at least some polls we would have an indication, but it isn't there.