It was alright with him that she hadn't enchanted it herself, though Marek thought it was a valid question. After all, that had been a consideration when he'd brought his broken quill to her. It hadn't worked then, but that didn't mean she couldn't have practiced and gotten it right later. It really didn't matter to him either way, though. The gift that she'd remembered something he'd needed and felt sentimentally attached to, and had replaced it for him, regardless of how it had been replaced.
"Thank you," he said genuinely, returning the kiss. He wanted to try it out, but not right now. She was far more interesting than the quill. "The handwriting's not a big deal, so long as I can read it. No one else needs to be able to understand it."
And since he never wrote with a quill anymore, his handwriting was actually pretty terrible when he did it, well, by hand. He had no doubt he'd be able to read whatever this quill wrote.