Turn off the lights for an hour or two, and net her while she's sleeping. She'll still be almost comatose for a few minutes when you turn them back on to catch her. Have some plastic plants or java moss in the 10 gallon, so she isn't placed into a bare tank, to minimize stress. Turn off the lights soon after she's moved, you shouldn't have any problems. Of course, I'm assuming the 10 is cycled and ready for fish.