She is in 4 episodes of Season 3 (most recent) where she has quite an important part. Jeri Ryan is also in this season! Sadly they aren't on the screen together though. It seems highly likely Kate will be in the next season because of who she is in this one.
Of course she is fabulous though the role isn't as interesting as her Mercy one where she was very flamboyant. And yes that's from W13