If the doggy door is removable, they could take it off completely. This would be the quickest way to free her. However, this might require some tools depending on how the doggy door is attached. Once it's removed, she can simply step out or be lifted out easily. Also, while trying to get her unstuck, it's important to keep her calm so she doesn't struggle too much and make the situation worse.
She might be too big compared to the size of the doggy door. Maybe she was trying to reach something on the other side in a hurry and didn't realize she wouldn't fit.
She could try to wiggle her way out gently. If it's just a matter of being a bit wedged, some careful movement might free her.
She should be more aware of her body size compared to the doggy door. If it looks too small, she should not attempt to go through it.
One possible outcome could be that she gets rescued by someone nearby. Maybe a neighbor hears her cries for help and manages to free her from the doggy door.
If she's stuck in a physical space like a small hole or a tight corner, she can try to wiggle her body slowly. Sometimes a little movement at a time can help her get free.
She can try to gently twist and turn her foot to loosen it from whatever it's stuck in.
Another situation might be that there was some kind of malfunction with the doggy door. She might have been leaning against it while it was in an open or half - open state, and then it closed on her, trapping her in an embarrassing position.
Maybe someone pushed her from behind to get her through. Or pulled her from the other side.
They could simply unzip it if it has a zipper. If it's a button - up dress, carefully unbutton it. Maybe ask for help from someone nearby if they can't reach all the buttons or the zipper.
First, you need to establish basic commands like 'sit' and 'come'. Use positive reinforcement such as treats and praise when the dog obeys. Be consistent in your training methods and schedule. For example, train it for short periods several times a day.