If she hadn't asked for leave in an open and aboveboard manner to come to the hospital but had used the lunch break or come after evening self-study instead.
If she were seen by Liu Qianghua and Zhang Shifang, they would definitely think she was acting with a guilty conscience...
Although, Tang Huai also felt genuinely guilty at the moment, because she was worried about Jing Xuan being the one who accidentally hurt Ma Zhihao, worried that if Ma Zhihao were to die, Brother Jing Xuan would become a murderer...
To avoid suspicion, Tang Huai had Li Ruyi accompany her to the hospital, where they registered and were examined. After hearing her "symptoms," the doctor inquired about her menstrual cycle and concluded that she was suffering from dysmenorrhea.
Tang Huai was not only insincere but also a master of drama, adding just enough acting where needed.