How come I have such a great sister?

Ava didn't become a fool captivated by vanity just because of a pair of shoes. 

The fleeting joy couldn't dilute her suspicions, especially when she found Sam's bed empty at a time when everyone should have been resting, should have been asleep. 

All her doubts exploded at once.

Where could her brother be at this time? It made no sense for him to go out so late. 

To the bathroom? Impossible; Ava had noticed earlier that the bathroom light was off. 

So, where could he be? The answer seemed almost too obvious. Other than the room of that woman, where else? 

From the beginning, she had her doubts about the so-called ordinary friendship between them.

Now, this piece of information was telling Ava something she hoped wouldn't happen. What could Sam possibly be doing in Angel's room so late at night?