what happens to her from bright light?I am sharing this light subject as I learn it. I know somebody who has prolactin issues and light is a big player in her condition. Here is another Ray Peat quote that should answer your question.
"The contribution of bright light to retinal damage in babies has been denied in several recent publications, and these articles undoubtedly provide useful material for defense lawyers to use when hospitals are sued for causing blindness. One publication based on experiments with kittens concludes that bright light does not harm the newborn’s retina, but the comparison is between continuous light and intermittent light, rather than between bright light and dim light. Twelve hours of total darkness, rather than sparing the eye by reducing its exposure to light, would sensitize the eye. The only reason such appalling things can be published is that their conclusions protect the hospitals." -Ray Peat
i thought there have been other quotes mentioning light is good, to avoid darkness etc...