@ineffable There is more to being a healer than being a body mechanic. Some party members have been hurt in ways that no magic can heal. And more than just healing wounds and injuries, the job of the healer is to reinforce, strengthen, and bolster the individuals under their care. You could make the champions a healthy meal so they will be prepared for tomorrow's trials. You could sing them songs to ease their weary souls. Or, in this specific circumstance (with Dionaea suddenly found missing), you could calm their fears and help them think more clearly.
Or you could even be a leader. There's no one saying you can't bark out orders or show them how to handle all the revelations they've just had. Help them make sense of it all, give them clarity and purpose.
Don't just sit around waiting for people to act so you can react. If everyone did that, the RP would stagnate. Take initiative and do something. Heck, maybe even consider starting your Subplot.
Act, don't just react.
EDIT: I just had an idea. If you're feeling useless, maybe Laina is too. Convey that to somebody IC and use it to bond.