The bath definitely can't hurt. Just soak her and leave her alone to soak in the water. Make sure the water doesn't get cold, and check on her every 5 minutes or so. That usually does the trick for me.
I would definitely post a picture first though. Mine never gets a red vent, and the red vent thing could be something that can get irritated by the water.
Also, what substrate are you using? What are your temps and humidity?