I know whats happening and how she can see normal again,
The cannabis can flex certain muscles in the eye that help focus.
Heres a method I learned in a book that claims to cure any vision problem including glacoma. This must be done every day for a couple weeks
1. sit back in a chair and relax and close eyes
2. take fingertips and touch them to the pupils of the closed eyes and gently apply a tiny bit of pressure
3. keep fingers there for about 3 minutes
4. after taking fingers off keep eyes closed and relaxed at least 2 minutes
5. open eyes
the tips of your fingers have electical impulses that can flex the eye muscles. in order for your eyes to focus all theses muscles must be strong. you must keep eyes closed afterwards because certain muscles will still be flexed for a few minutes and if you open them you will have blurry vision.
This method is called Palming