I'm afraid I see Nick headed for trouble.   I think he was a little bold to invite Melanie to stay with his Aunt Maggie without her knowledge and consent.   Bad idea.

I also think he is acting a little out of it and popped some pills and chewed them rather than swallowing with water and it looks like he might have a drug problem.   

Hope Maggie hurries home and is observant about his pill popping.   And I want to so much see Maggie set Melanie straight if she is rude.