If you want to think that happens, then go ahead.
Remember this is not real life, where things happen even if you don't personally see them. In a game, things happen only if the player finds out about them, one way or another. If the player never finds out about something (either by actually seeing it happen or reading about it during gameplay), and reaches the end of the game, it just didn't happen on the route that player followed. If, however, the player WANTS to believe it did, then it did, but only IN HIS or HER MIND.
If Emma is a gloryhole slut, even in the Alpha route, we will eventually find out about it. If we don't, she's not. Unless of course, you really want her to be one. Then your imagination can take you anywhere you desire.