Officials said Jessica McDonald was last seen with a friend at Jessica's sister's house in the Bayou Vista area of Galveston County on Tuesday.
She and the friend left the house Tuesday night, Galveston County Sheriff Henry Trochesset said. The friend was found the next day inside her own car on Lakeside Drive, which is down the street from the sister's house. The friend was disoriented and was taken to the hospital.
No one has seen Jessica since.
According to Texas EquuSearch, there is "great urgency to find Jessica."
Currently, it is unknown what type or color clothing McDonald was wearing at the time of her disappearance.
Anyone with information is asked to call the Galveston County Sheriff's Office at 409-766-2322 or Texas EquuSearch at 281-309-9500.
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