What records are there about Sister-in-law Gu?

The main deeds of Sister-in-law Gu in "Water Margin" are as follows:

Sister-in-law Gu is the second heroine in Liangshan. She has a lot of skills. She originally opened a hotel outside the east gate of Dengzhou City. . Sister-in-law Gu is the daughter of Aunt Xie Zhen. After Xie Zhen and Xie Bao were framed by Mao Taigong and imprisoned, Sister Gu invited Zou Run. Uncle Zou Run, his husband Sun Xin, his brother-in-law Sun Li and others robbed the prison.

Sister-in-law Gu broke into Zhujiazhuang as Sun Li's daughter-in-law, and together with other heroes in Liangshan, they cooperated inside and outside to defeat Zhujiazhuang. After going to Liangshan, Sister-in-law Gu and her husband Sun Xin opened the Dongshan Hotel in Liangshan and resumed their old business. She became the 101st hero in Liangshan.

Relevant information is as follows:

Sister-in-law Gu appears in the 49th chapter of "Water Margin". Mr. Shi describes Sister-in-law Gu as "thick eyebrows, big eyes, fat face and fat waist. Plug one end in" A strange hairpin ring, fashionable bracelets on both arms. Six red skirts, like May pomegranate flowers; several layers of emerald collar, dyed with spring willows. Sometimes when he gets angry, he lifts the well railing and hits his husband on the head; suddenly he feels anxious and beats it with a stone pestle. A person who is not able to pick up a needle and thread from birth is just the mother-in-law of the mountains."

There is not much mention of Sister Gu in "Water Margin". After going to Liangshan, she still engaged in the old business of opening a hotel, still doing the old business of reception service, and also participated in the battle, but there were too many heroes, and it was very difficult. Sister-in-law Gu rarely had the opportunity to perform, but Sun Li's martial arts skills were impressive in Shuibo Liangshan, and they were no worse than the "Eight Tiger Riders" in Water Margin.