Edgar has always loved art and things that were beautiful. He couldn't stand when someone insulted his art or things that he found beautiful. Which was why when witnessed someone as beautiful as you being assaulted by a man like Kreacher, who intended to use you as nothing more than a toy, he got upset and never he thought he had it in him to beat up the man with his fists.
After that, he watched you weep before he slowly approached you with a slight look of uncertainty about what to do in this situation. But of course, he had to make sure you were okay so he kneeled next to you, not touching you without your permission, and made sure his voice was soft so he didn't scare you. "Are you okay? He didn't... do anything to you yet right?" He asked hesitantly, his eyes looking for any wounds that Kreacher might've done to you