Being locked in the garage

Once upon a time, (Ok, last week) a woman (who shall be left nameless) was getting ready for some relatives to come visit her home. She was emptying boxes from her recent move and trying to put away all her stuff. She had more to do than time to do it, but as she'd empty two or three boxes, she'd put them in the garage. 
The door to the garage from the kitchen has two locks. One needs a key. One is a button lock. (Don't get ahead of me.) The lady (who shall still be left nameless) was usually careful to not shut the door, for the button lock was locked. Somehow she felt safe leaving that button lock locked. Well, on this particular day when she went to put the boxes in the garage, the door shut. Oh oh. She tried and it wouldn't open. Here she was in the garage. With her car. But with no key to the car. She could push the garage door opener button and get outdoors, but then what? Go to a neighbor's? She'd only met them enough to say "Hello".
Ahha, she had her phone in her pocket. Smart. Call her sister and have HER bring her key to the house and let said woman in. No problem. Ooops, sister was on an errand. She is running a business, for heaven's sake, and had things to do for a customer. Okay, sister would come in about an hour. 
Nameless woman retrieved blanket in trunk and wrapped it around her shoulders. 40s in the garage was taking its toll. Ladies, you know what's coming next....the need for a little girls' room. Now what?
A quick glance around the garage netted cardboard boxes. No help. A wooden barrel sort of thing. It was a possibility, but not water-tight, or any-liquid-tight, for that matter. There was a recycle bin and a trash bin, but stood taller than  the woman's waist. How could she hoist herself up that high? Then she spotted a plastic waste basket. Enough said.
After a bit, she slid into the driver's seat of her car and let the back of the seat down. Time for a nap. Later the back seat seemed a better spot, and lo and behold, there was a fleece vest! That felt good and then the blanket went around her shoulders again. Stretching out on the backseat felt more comfortable than the front seat, but oh oh, the cold seat made the need for "the little girls' room" again. I'll stop here.
Sister finally came to let her in to the warm kitchen. 
Keys have now been hidden, and button lock stays open. 
Hope nameless woman can always enjoy a good laugh!