A/N: TPOV
Tonks was startled awake by the slight, but unmistakable tingle of someone else's magic. Drawing her wand from under her pillow she quickly drawing drew it, expecting to face some type of threat. Instead she found herself aiming at the blinding white light of a patronus. Her eyes went wide as she realized whose patronus it was.
The Order had started using patronuses earlier in the year for sending certain communications that were too important to risk interception. All of the members had become familiar with each other's different forms. That had been the first time she had seen Severus' doe. She remembered how surprised she was. She had expected a snake or even a bat, anything darker than the soft, silvery, innocent looking creature currently standing at the end of her bed.
She rushed out of bed, throwing on the same clothes she had worn yesterday that made a trail on the floor to her bed. Running to follow the doe, all the reasons he would have contacted her in such a manner raced through her mind. Had Hogwarts been attacked? Had something happened to Harry? Had something happened with the Order? Her breath, fast from the run, caught in her throat as she stopped just short of the Hogwarts gates.
"Severus!" Tonks cried out as she rushed over to his crumpled form. The questions, already forming on her lips, became a noticeable hiss as she saw the blood on the ground and the sticky, wet look of the right side of his black robes…Death Eater robes… she realized, causing a fraction of hesitation as she approached. His right arm was clutched close to his chest, his back hunched in pain. She circled around to his front, trying to catch his eyes. "Who did this?...Are they here?" She assumed since he was at the gates that he had apparated here, but wanted to make sure that if she took him to the castle that she was marching them toward safety, not away from it.
Whether due to blood loss or pain, Tonks wasn't sure, he didn't respond. "SEVERUS!..Look at me!" Tonks snapped trying to get his attention, trying to keep him focused and conscious. As he looked up, Tonks couldn't help the sigh of relief, even as the glazed look in his eyes and the way his face was contorted in pain pulled at her heart. "Is the castle safe?" She asked, softer yet no less determined. He nodded briefly before his body once again shook. Acting quickly she got on his left side, still unsure as to how his right arm was injured, just knowing that it was obviously in enough pain to offer little support in helping her get him to the castle. She cast a charm on him to make him lighter so that she could better support him with his arm around her shoulder and hers wrapping around his waist. She followed that charm up with an illusionment charm, in case any students or fellow teachers were up she knew that none of them needed to see him like this.
She moved them both as quickly as she could down to his office and chambers. Trying to keep him conscious she quizzed him on different potions and their ingredients the whole way, which served the dual purpose of keeping him awake and hopefully focused on something other than the pain. She maneuvered them through his office and into his room, her eyes scanning it quickly to find the bed. She gently set him on it, easing his body down until it was prone. As his right arm came into view for the first time she couldn't help the wave of nausea followed by one of intense fury that washed over her. His arm was in tatters and the full reason for the blood loss was more than obvious. She backed up, pulling breath through her nose and keeping her jaw clenched. She turned to look for the cabinet holding his personal supply of potions she had quizzed him about on their way down here. Spotting it on the other side of the room, she practically ran over to it, scanning the labels for both a pain-killing draught and blood-replenishing potion. Grabbing a vial of each she rushed back over, gently lifting his head as she held each to his lips.
Looking again at his right arm she knew it would require someone with far more medical knowledge than her combat experience allowed. She had done as much as she could with the potions he had so thankfully had on hand. As he drifted off into unconsciousness she quickly sent her own patronus to Madam Pomfry, refusing to leave his side.