All I have to say is...GET OUT! I was in same situation and it graduated to horrible physical abuse (in the hospital type abuse) which then led to the kids and then I was OUT OF THERE.
Driving distance between Key Largo, FL and Vero Beach, FL is miles . If you drove an average car, the gas would cost you around $, since you would need about gallons of fuel.
About 200 miles, following roadways.