Hroot only 'Ents out' when it's absolutely necessary, like when the party's about to be overrun by darkspawn closing in from all directions. Most of the time she'll be a ghostly presence drifting across the battlefield trying to keep everyone's health up, and occasionally striking at enemies with a spectral blade.

Of course, when she does need to the bodies will be piling up so fast we'll be fighting in the shade. :lol