You think you'd be able to cut off all of that old growth without killin her? Seems like keeping the nasty stuff on, isnt helping her anymore then the shock from cutting it off would hurt her..
This girl is at day 20 or so of 12/12 right now and is looking much better now that it's grown out a bit. It's on an automated watering system now and isn't seeing any more deficiency issues. About 30 inches tall right now but it'll stretch a little more.