Alex invited Sasha's friends over, but Sasha's friends made a mess.
I invited Sasha and her friends to my party yesterday. Big mistake. I already know what you're going to say. They're inconsiderate. Putting it mildly, yes. They're rude and have no manners. And they made a complete mess! Now you know for next time to tell Sasha NOT to bring her friends. Obviously. They nearly ruined the whole party! Sasha really needs to reassess her friendship with them.