When Yang Gaoshu heard Jiang Lei's words, she was so angry that she pursed her lips for a few seconds. She did not ask that question to remind Jiang Lei to spend money on his sister. She only wanted to remind Jiang Yao that she did not get any benefit from her mother-in-law. She also wanted to know how the Lu family treated Jiang Yao.
In other words, she wanted to hear Jiang Yao complain about how her mother-in-law was miserly and how she favored her niece. Everyone knew that the Lu brothers were very close and that Mrs Lu loved her niece as much as she did her daughter. Therefore, Jiang Yao had two sisters-in-law of equal status.
Yang Gaoshu had heard about Lu Yuqing a long time ago. She could not control her husband; he had cheated on her with another woman. She had gotten a divorce, which was a shameful outcome. Since she had returned to her parent's home, Yang Gaoshu thought that Jiang Yao's life must be even more difficult with a divorced sister-in-law.