This is...

...that girl's house. Opening line of あの女のハウス ~彼を返して、お金貸して~ (That Woman's House ~Give Me Back My Boyfriend, Lend Me Money~), a song about a woman making a scene at the place of the person who she thinks is stealing her boyfriend.

So it seems...

For all of Alice's bad habits, she doesn't live in　a tasteless home.

How cheeky...

... Could it be that you made up that composition we saw?

... Could it be that you made up that composition we saw?

I made it up.