Final answer:
The conflict between Starr and Hailey over Tumblr could reflect issues related to cyberbullying or social media's impact on individuals, as exemplified by Megan Meier's tragic story and Selena Gomez's struggles with online platforms. These subjects are commonly addressed in literature to show social media's effects on relationships and mental health.
Step-by-step explanation:
The question you've asked about Starr and her friend Hailey referring to Tumblr doesn't provide enough context to refer to a specific incident. However, it seems to involve a conflict within a social media platform akin to the real-life scenarios of cyberbullying as experienced by Megan Meier and the intense and challenging relationship that many, including celebrities like Selena Gomez, have with social media. Such themes are often explored in literature and young adult novels to discuss the impact of social media on personal relationships and mental health. In Megan Meier's case, what started as a friendship online turned into a horrific case of cyberbullying, leading to tragic consequences. Selena Gomez's experience, on the other hand, speaks to the addictive nature of social media and the pressure that comes with being in the public eye. Both cases highlight the deep effects social media can have on individuals and why it's a significant topic of conversation in modern literature and discourses on mental health.