He looked vulnerable. Maria didn't like Coulson looking vulnerable. She was still trying to get used to seeing him in things other than suits and ties, but at least those were acceptable - and under the circumstances, his choice of footwear was very appropriate.
Coulson very obviously hurting was not.
"Sit down." She made it an order because worry was inappropriate, and really gave him no choice as she shrugged off her coat and decided to risk the new couch. "And take the damn drugs they gave you." Setting the takeout bag on the coffee table, she added a little softer, "I brought Chinese, though the shawarma place was tempting."