LOUISVILLE, Ky. (WDRB) -- A judge has rejected a plea deal offered by a woman accused in the drowning death of her 8-month-old son.

Geneva Walters is facing charges of manslaughter and wanton endangerment for the death of Michael Xavier Cowherd.

She attempted to make a plea deal Thursday, in which she agreed to plead guilty to reckless homicide and spend 60 days in jail, with an additional five years of probation.

The judge rejected that plea deal, indicating that this would not be enough time for a reckless homicide charge.

Walters promptly withdrew her guilty plea. She is now expected to stand trial for the original charges of manslaughter and wanton endangerment.

The child was found in a bathtub in a Jeffersontown, Ky. home. Prosecutors allege that Walters gave the infant diphenhydramine -- a common allergy medication -- and that may have contributed to his death.

A Web site created by the U.S. National Library of Medicine states that the drug is used to relieve symptoms such as watery eyes, sneezing, runny nose and some coughing.

The site also issues a stern warning to parents:

"Diphenhydramine should not be used to cause sleepiness in children," it says.