A female.
Pat is definitely a she.
(personal) The female person or animal previously mentioned or implied.
After the cat killed a mouse, she left it on our doorstep.
(personal, sometimes affectionate) A ship or boat.
She could do forty knots in good weather.
(personal, sometimes affectionate, old-fashioned) A country, or sometimes a city, province, planet, etc.
She is a poor place, but has beautiful scenery and friendly people.
(personal, old-fashioned) Any machine or thing, such as a car, a computer, or (poetically) a season.
She only gets thirty miles to the gallon on the highway, but she’s durable.
(personal) A person whose gender is unknown or irrelevant (used in a work, along with or in place of he, as an indefinite pronoun).