Like Samantha the last time, Melissa has no issue finding a suitable entry point to Basil's mind: an unlocked rod iron gate.
The steampunkish city that Basil was becoming more and more familiar with as 'what inside his brain looked like' splayed out before her. Here, she might get a better idea of how the sighted saw Basil, as invisible people in all forms of anachronistic regalia moved about their business around her.
Melissa would get the feeling she was being watched, though none of the see-through figures seemed to notice her.