Hey I'm Keisha! Oh, him, that's just my boytoy, Andy.
All I know is, he better get me something nice, because I spent too much of my babysitting money on that sweater I got him.
Keisha is kind of like the nurse in Romeo and Juliet , she provides comic relief, with some of her comments and remarks. She is "dating" Andy Jackson, who is suffering from depression and suicidal thoughts. She is like a therapist for him, she is the only one who sees that he isn't getting any better.
Keisha is like a therapist for her friends, she listens and advises.
She doesn't tell people that Andy is still depressed and suicidal. She keeps it to herself, not informing her or his parents.
She is struggling with her relationship with Andy. He is always depressed, and she doesn't know if she should break up with him or not. If she breaks up with him he might kill himself, if she doesn't she's going to remain unhappy, and emotionally drained.