Despite his failure to aid in Shu's rescue, Mark had not failed them elsewhere. She could clearly recall the small, fluffy creature in Wonderland that spoke to her in Mark's voice, who found her and entrusted her with information that had been critical to the survival of ALICE and all that she had created. Even if that was not his intention, it was incredibly useful, and she had no doubts that he could prove himself useful once more.
Especially considering Wonderland's relevance to this particular predicament.
As soon as she arrived at his door, she knocked. She knew there was no need to make herself look more professional or presentable to him by now - these were not things that he ever appeared to notice, and there was no more time to waste.
Zoobey