Did Mary Lincoln need committal?

[Gene C]

" Dr. Ralph N. Isham, her personal physician, and five other doctors, advised Robert that his mother was indeed insane. Leonard Swett counseled Robert to have a hearing and commit her to an asylum for her own good. An insanity hearing was scheduled on May 19, 1875, before Cook County Judge M. R. M. Wallace. A jury of twelve men
pronounced her insane. That evening Mary tried to commit suicide but failed because the druggist knew her and omitted the laudanum from her prescription. The following day she was taken to Dr. Richard Patterson's Bellevue Place, a private insane asylum in Batavia, IL.

(from Abraham Lincoln - From Skeptic to Prophet by Wayne Temple, p381)

I don't know much about Mary, but I've never read this before, and there is no footnote. Has any one else read or heard about this?