How would you argue that by going insane, the woman is freed in "The Yellow Wallpaper"?

It is possible to consider insanity the only form of
freedom she could undertake in her societal position. Women were held to very specific
expectations and any sign that they were reacting differently was considered
hysterical--from the Greek, meaning something had gone terribly
wrong within her uterus and was affecting her mind.

Modern
doctors would diagnose the main character as suffering from postpartum depression or
similar. The typical treatment now would certainly not include
being locked away in a room, but at the time, this isolation was considered key. Women
were forced into solitude during pregnancy and, in this case,
thereafter.

Sinking into the manifestation of her mind
allowed the woman to "escape" the prison of her bedroom walls. Her methods were
unconventional--clearly evidenced is the horror her husband feels at realizing she has
lost her mind, which is socially shameful--however, she was no longer "imprisoned" by
the torment of the wallpaper or the enclosure of her room, or even the burden of her own
depression. She no longer had to suffer the expectations and restrictions of others, and
instead limited herself alone. You might argue that by setting her own limitations, she
is made free--because she is the only person in charge of the "prison" she now
occupies.