The young woman, my younger sister, has been living away from home for three years now. She works in a 3-line city in a northern province, both occasionally having a job and occasionally not having a job, with a monthly salary of 4,000 yuan. She is currently unmarried and has a boyfriend. My wife and I live in Beijing, have a house and a child, with a monthly income of 40,000 yuan, of which 2.5 to 3 million yuan goes towards paying off loans and living expenses. The pressure on our family is quite high.
The mother-in-law takes care of our child every month, and every month she gives us 50,000 yuan as a child-rearing allowance.
As for my sister's incidents, there have been a few notable ones. Firstly, she comes to Beijing to play almost every year, staying with us for free, not doing any household chores, and leaving empty-handed each time, but taking our household items with her.
Secondly, she always tries to get her older sister to buy her high-speed rail tickets, often hinting to her that she should pay for them.
Thirdly, she often tries to get us to spend money on her and her mother, such as taking them on trips outside Beijing, and then screenshotting their plane tickets and sending them to her older sister, implying that the older sister should pay for them.
Lastly, it seems like both the mother-in-law and my sister want us to spend more money on her, such as buying her things every time she comes to visit. The mother-in-law would often try to get us to buy expensive things for my sister, which she thinks are good, and then she would take those things away with her each time she leaves.