I would say this question refers to the political beliefs of the writer, which is in fact the exact opposite. The purpose of this series is to criticize and bring awareness to all of these themes
I'm pretty sure everyone in this anime has one just because of the circumstances they're put through but more specifically Sara has PTSD related anxiety attacks
Depending on your interpretation of the ages (Sara is raped by a much older man) as well as the relationship that Hamdo and Lala Ru have (she is thousands of years old according to herself but Sis points out that she looks young)