PLEASE HELP ME ASAP will be marked brainiest

When we were alone, [Lillian Jean] confided her secrets to me: the boy she had passionately loved for the past year and the things she had done to attract his attention (with no success, I might add); the secrets of the girls she couldn't stand as well as those she could; and even a tidbit or two about her elder brothers' romantic adventures. All I had to do to prime the gossip pump was smile nicely and whisper a "Miz Lillian Jean" every now and then.

Why does Lillian Jean confide in Cassie?

-She believes Cassie is trustworthy.
-She earns Cassie's respect.
-She influences Cassie’s opinions.
-She teaches Cassie how to attract boys