Is your mother-in-law providing you with transportation. If she is, what she wants goes. In that case, you need your own wheels, so save up for a good used car. New ones, and the insurance on new cars, are too expensive. In the mean time, save errands for weekends, since you can't rely on your mother-in-law to use good sense or common courtesy, during the week.
I love dogs and cats, but your errand was more important than treating the dogs to a ride. Your mother-in-law puts her and the dog's frivolous desire for a ride in the car above your real needs. She seems to have little respect for you, and no sense at all. You and your spouse need to save up for your own place, so you can both lead your own lives.
Remember, get your own car, and get your own place,--ASAP.
_________________
If a man does not keep pace with his companions, perhaps it is because he hears a different drummer.
Let him step to the music which he hears, however measured, or far away.--Henry David Thoreau
