Answer:
1. If it is still fine, sew it. If the hole is big dispose it. You can also turn it into a fashionable tattered jeans or turn it into a short.
2. No, ask for advices and seek help to fix it.
3. Sew it and adjust it according to my fit.
4. Research some DIY crafts to make it useable.
5. I'll politely advice her, since it is only walking distance might as well do walk for physical activity. It can benefit her health, save energy consumption, and be a role model for the others.