[clarke watches his expression and despite not remembering him, she is easily able to read his demeanor and notice how guarded he seems as his words back it up with how he still wants her to accept that he was just fine. she had only just met him and as strange at it was to just find him in her house, there was a vague sense of familiarity with the concern she felt about him. she wasn't about to just let him brush that aside either when she could help him with his injuries.

clarke is just about ready to make her point again when he finally relents but she can't help but roll her eyes at his words. she had a few minor injuries herself but he looked in much worse shape than she did right now given that the bruising around his neck doesn't escape her notice either] I wouldn't call those just a few scratches.

I know you're not going to die but if you really are just fine, it should only take me a few minutes to confirm that. [she pauses for a moment, giving a slight shrug of her shoulder] Besides, you can't expect me not to be concerned if you're already in my house and have those sort of injuries.