Asking for and and giving advice

Sara- Hey, Aina. Are you OK?
Aina- No, I don't feel very well.
Sara- What's wrong?
Aina- I've got a stomach ache.
Sara- You should go home.
Aina- No- I want to go swimming after.
Sara- You really shouldn't go swimming, Aina.
Aina- You're right. I'll go home.