Infer: Reread the first paragraph. What tone, or attitude, is created by the author’s use of the first-person pronouns we and our? Why do you think she chose to introduce her topic to readers this way?

The tone is hopeful but still aggressive, she wants you to understand friends you may have are not going to always treat you right and you won't do the same for them. Using pronouns like we and our make the text more personable so she can connect with you which is why she makes it aggressive, so you understand the expense of a friendship.