Greetings @sayeedasultana
Truly our experiences can vary from person to person, and some people gain experience more quickly while others take their time. But when it comes to whether age or circumstances increase our experience, I believe that circumstances play a significant role in accelerating our experiences. Like the example you gave where the girl in your neighborhood who faced the loss of her father at a young age had to mature quickly and take on responsibilities. This challenging circumstance helped her gain valuable experience and become more mature. So, circumstances can definitely contribute to our experiences. Good luck.