Somehow, if she'd punched him, he'd have been much more comfortable with this situation. It would have some footing on familiar ground. Instead, Alicia was speaking calmly, taking a seat, waiting patiently for him to explain himself, and that was so much more nerve-wracking. Was she cutting him off already? Had she made the decision to delete him from her life, and all of this was just perfunctory questioning so that she had the facts, and the justification?
He stood with his back to the fireplace, only the coffee table separating them but it felt like miles. He couldn't sit though; it was too casual, too relaxed, and he didn't get to be that right now.
"I did, but I swear to God," the Muggle phrase slipping in there as he rushed on to continue, "I didn't mean to mess it up and mentally damage her." He carded his fingers through his hair then, knowing that what he was about to say wouldn't be received too well. "I did it, the Obliviation, because she overheard something important to the Ministry, something so incredibly imperative to what the Ministry is doing that it couldn't be known." Especially not by an ST, he decided not to add.
The honesty came spilling then. If she was going to never speak to him again, at least she'd know everything. "But I wiped too much. In the heat of the moment, I decided to get rid of any memory she might have had of me completely. She'd been... not stalking me, but pressing me again and again for things, help with her status, her father, pushing me on the politics, and I'd done stupid things that might reflect badly on the Ministry, like letting her get away with being out after curfew and almost admitting that she might be part of that terrorist group. She could have used it against the Ministry, I don't know, but she seemed dangerous because of that. I really didn't do it maliciously or sinisterly or anything, but in those few seconds when I was doing the Obliviation, it seemed like a good idea to wipe me."
He shook his head. "I know it was wrong. I know it was stupid, I really do. And not just because people know now." He sighed, blinked his eyes slowly as he looked down. "I'm trying to fix it, but..." Robbie shook his head again. "I can't undo it."