Ignore him

Gabby decided that she'd pretend he didn't notice him, no matter what happened. She would even put on music sometimes, so as to disguise her not hearing him.

Back at home, Gabby decided to make the most of her advanced warning. She turned on some loud music, and hopped into the shower. She left the door open just a crack, so he could open it without making noise. She could felt her nipples hardening, slight arousal from what she was doing heating her body. She even played with them for a while, before hearing the front door unlock and open. She could either call out to him, or pretend she hadn't heard.