Well, not to keep beating a dead horse but 1890 to 1900 is 120 months.
After Utah was a state, then women were granted the right to vote again in 1895. The privilege was taken away by the federal courts in 1887. Initially they felt that women would vote polygamy out, but when that didn't happen, the federal courts revoked their right to vote.
Wyoming as a state granted women the right to vote in 1890. Source: Women's suffrage in Utah
"We don't need no stinking details"