Have her start at 25mcg/ed for 2-4wks.
After that, bump it up 12.5mcg every 2-3wks
There shouldn't bee a reason for her to go over 75-100mcg/ed. She can stay at this dose safely for at least 6-8wks IMO
When she comes off, have her run 25mcg/ed for 2wks, then come off all of it.