Isabelle has been forgetting a lot of things lately, and her friends and family have been angry with her. Today, she feels as if she's going to do something wrong no matter how hard she tries. She has decided to play it safe and stay indoors, even though there are many things she would like to go do with her friends. What has most likely happened to Isabelle?

She has contracted the flu
She has low self-esteem
She is not good at making friends
She is unfair to her family