Yeah, I can see how she can be useful in that regard, definitely. It just feels pretty niche, especially right now, when the vast majority of heroes are melees.
Edit: to add to further discussion, I do feel that she's lacking in a couple fields, particularly health and movement. For such a fragile hero, she sure doesn't have a lot in the way of escape options. Her whip-buff ability and her leap somewhat help with this, but only in the way of engagement, not in the way of escape.
I don't particularly understand the reason for her having an ability to leap off of allies. It doesn't feel all that useful at all. In fact, when escaping it generally hinders me more than it does help. I end up taking a couple hits I wouldn't have had I not used the leap, all because the target I was leaping at moves towards me and actually sends me leaping BACKWARDS rather than forwards.
Still, I feel that she's a very solid hero.