That snake could of once been somebody's pet
When they get too big, people let them go. If their is a wild life center anywhere in your county, call them to get rid of the snake. It surprised me that animal control would not help. Call them back and ask them if their is anther nuber you can call to get rid of it.
Snakes like to hide, and they need warmth. So that snake is hiding somehwere where it is warm. Thankfully you were on it, and got your babies out of harms way. Because that snake if as big as you say it is, would easiely be able to get one of yur babies. Living in Florida, I am certain you already are aware of this.
That snake could even get up into your car engine, I would keep trying to get help. Perhaps call your county city , and ask for the number to the wildlife game control.
Until that snake is found and caught, I would not let my little dogs be outside alone . I hate snake too, yuck .