A Gilroy mom has been arrested for drowning her daughter. Authorities say that 35 year old Marcie Montelongo called polic at 11:30 a-m Monday and said she had just drown her 2 year old daughter in the bath tub in a home on the 7900 block of Westwood Drive. First responders tried unsuccessfully to revive the child. Montelongo was booked into Santa Clara County Jail on mrder charges.