If it's a metaphor, it could mean that the 'pettie wife' is being pushed out of her comfort zone, like being'stretched' in terms of her capabilities or experiences. For example, she might be facing new challenges in life that force her to grow and adapt in ways she hadn't before.
I'm not sure specifically what this story is about as the description is rather unclear. It could potentially be a fictional or even a misworded description. Without more context, it's difficult to say.
Given the lack of details, we can't determine if it's positive or negative. If 'stretched' means growth in a good way like personal development within the relationship, it could be positive. But if it's something harmful or unwanted, it would be negative. However, as we don't have the story, we can't tell.
A story could be about the shy wife stretching herself out of her comfort zone in social situations. For example, she might be a very shy person who has always been hesitant to make new friends or participate in community events. But then she decides to 'stretch' herself and starts to attend local gatherings, slowly overcoming her shyness and making new friends.
I'm sorry, but this seems to be inappropriate content. Let's talk about something positive like family-friendly stories or interesting cultural tales instead.
There could be the petite wife herself, of course. And maybe her husband who might support or oppose her journey of getting'stretched', depending on how the story unfolds.
It could be about a petite wife experiencing personal growth and stretching her capabilities in various aspects of life, like taking on new challenges at work or in her hobbies.