Stop in for a cup of coffee

Just great,girlfriend drove the Durango,"check gauges" started flashing when she was on the brakes,but gauges didnt show anything wrong at all,so she drove it to where she was going.
Parked the car,got back to it later hopeing to be able to drive it home,car starts,drove a few feet and then died and wont restart,battery seems dead.
Will get trailered home,i hate this,had i not been sick and coughing my lungs and brain out i would have been able to go there and drop a new battery in the thing and probably get the thing home atleast,o well things could have been worse i guess.
Check the ground cable. It came loose on my wife's Durango and it did that very thing.