So far it didn't look as if Ratonhnhaké:ton really needed to intervene. Lenalee had taken up refuge out of sight, and as far as he knew this was all a part of her plan. In all honesty he didn't want to risk bungling into the situation and possibly ruining what she set out to do.. so for now he kept to the high ground, and in turn maintained his ability to utilize the element of surprise.

"" A man shouted. At first, Ratonhnhaké:ton thought he had been spotted however, finding the source he could see the man was pointing to Lenalee. The officer questioned drawing closer to her position. As he neared the doorway, he also drew closer to the wall.... In one quick, invisible flight... Ratonhnhaké:ton reappeared, and dug his tomahawk into the man's gullet. Hiding yet another body, he didn't spare Lenalee a glance, just in case anyone else decided to look this way.

Then he ran off to join the riot and defend the prisoners that were probably captured just as unjustly as they had been. Now this should leave her open to swipe the keys.