A group of teenage girls are chatting and getting ready together when they start discussing their relationships and a mysterious message they all received calling them "presumptuous." They try to figure out who sent the message and why, and tensions rise as they discuss their personal issues and relationships.
As they continue to talk, some of the girls' boyfriends, including Bernardo and Michael, arrive and get drawn into the conversation. Michael reveals that he was desperate to get back with his ex-girlfriend Diana, and that's why he called her "smug" in front of their friends.
The situation escalates into a confrontation, with the girls demanding to know who sent the mysterious message and why. In the end, it's implied that the message was a prank, but not before the group's dynamics and relationships have been thoroughly dissected and drama has unfolded.
Here are the key facts extracted from the text:
1. The school year is over, and the girls are staying after school for practice.
2. The girls are discussing their relationships and boyfriends.
3. Diana received a strange message from an anonymous number.
4. The message called Diana "presumptuous".
5. The girls suspect that Maruxa sent the message.
6. Maruxa arrives at Diana's house and gets into an argument with the girls.
7. Bernardo, Michael's friend, arrives at Diana's house.
8. Diana and Michael had a falling out, and Michael is no longer interested in Diana.
9. The girls try to figure out who sent the message and why.
10. Michael confesses that he did not send the message and apologizes to Diana.
11. Diana and Michael get into a fight, and Bernardo tries to intervene.
12. The girls decide to leave Diana's house and resolve the issue another time.