In current version (v0.4) it is not possible to reach affection level 5 or lure Molly out of the bathroom yet.
Well apparently the feature is bugged.
First run (in browser) I was able to press the button and leave the console while the alarm was on, however when I downloaded the game to PC I might have done some things in a different order which made me unable to trigger both the 2nd raven hair night scene and the alarm.