For ground support. I'd go with a small craft or even a heavy aerospace fighter. They're better for the role and risk less. And to me, rather than a dropship, she looks like a 100-ton fighter or 200-ton aerodyne small craft with a couple LRM-20s and three big ballistic and/or energy guns.
If a small craft, she could also carry an small infantry unit, maybe even a light vehicle or two, for deploying on raiding, spec ops, headhunting, or similar missions. Maybe think in terms of speed, ECM, and other stealthy stuff. She kind of has that look.