It's not a good idea to control your girlfriend to read novels because it might have a negative impact on your relationship. Everyone had their own interests and hobbies. Reading novels was just one of the ways to express themselves. Moreover, the plot and characters in novels might not necessarily match real life. The important thing is that you need to respect your girlfriend's interests and support her in pursuing her freedom and creativity. If you're worried that your girlfriend will be engrossed in the novel, you can try to communicate with her and share your worries. Work with her to find a solution to the problem, such as making a joint reading plan or discussing with her what you think is a healthier way to control her reading time. Ultimately, you need to understand and support each other and respect each other's interests and hobbies in order to build a healthy relationship.