Charlie was actually surprised that Theo would put an arm around his waist because he'd definitely flinched away from his touch earlier. Then again reaching out was very different than someone reaching out to you. He nodded slightly and then, carefully telegraphing his movements, reached his left arm up and over Theo's head and gently wrapped his arm around Theo, coming to rest around roughly his shoulders and upper back. "You really can lean on me," he reassured. In all honesty he rather suspected he probably could have picked Theo up and carried him, but I had a feeling that it would go down roughly like insulting a Hippogryff.
"Yeah, probably, but I'd rather see you safe than leave you to the shitty people who usually turn up in the middle of the night around here," he said. Knockturn Alley might have become Monument Alley but there were still a few hints of the previous incarnation clinging around the edges and they tended to come out at night. "And it's not like I'd be asleep yet," he said.
They forged their way slowly across the room and entered the area by the bathrooms, where Charlie's office could be found behind additional wards at the right end of the area, just beyond the men's toilets. He could go and grab the healing kit from the bar while he left Theo against the wall waiting. He'd put him in the spare chair in his office but he didn't really know Theo and as much as his instincts said he was trustworthy he felt it would be a bad business move.
"Hey, can I leave you here a sec? I need to go grab the kit, and I think it's either locked down or behind the locked door and I don't want to try summoning it." He gestured to the wall opposite the men's toilet entrance. Thankfully magic was pretty good at dissipating smells so it was FAR better smelling than the muggle equivalent might be. "My office is just through that door, but I need to take down the extra wards."