You are right
But no, the protagonist is in her 20's. The only thing that makes the novel sound like its for teenagers is the thing that the girl works hard to do in the novel. This is the only thing that sounds 'unrealistic' in the novel. All other things are real and serious.
Just sharing.
The plot of the novel is based on my dream to be free. I am dreaming of such an 'unrealistic' thing to take place in my life. I'm looking for excitement.
I was raised in a very conservative society. I have a very boring life. I go outdoors twice or thrice a month. I am not allowed to have a drivers' license. Etc. What happens with the protagonist is what I wish to happen with me. Some people think my novel is strange, but I feel that this is how I wanted it to be in some way, childish and unrealistic, but serious and real at the same time.
Thank you guys.