The middle-aged suitor who is employed as a caretaker is alleged to have colluded with the parents of the girl to marry her.
Ruth Bosibori from Kisii County entered into the arranged marriage with the stranger.
The girl says she was forced to board a matatu from her rural home to Nairobi where she was picked by her suitor.
Little did the girl who dropped from class 7 last year due to school fees knew she was already married and had to fulfill the marriage duties.
She says she wasn't ready for marriage but want to go back home and continue with her studies after three nights of being a wife.
The girl was discovered in a two bedroom house by the homeowner in a needy state and informed the village elders who mobilised members of the public.
The suitor ran away fearing public wrath.
Residents strongly condemn the incident urging police to hunt down the suspect.
Bosibori parent's mobile numbers are said to have gone off immediately upon discovering that the girl had been rescued.
The girl is currently under the care of a well-wisher after being treated at a hospital in Kitengela.