She's very envious of his new tools. At the very least, she's hoping maybe somehow her immune system means she'll manifest some latent powers of her own... or something similar.

"Good thing nanotech and medical supplies seem to look the same in every universe," Tali comments, moving through the lab quickly but quietly, keeping an ear out for any noise and any sign of -

"Aha!" Quiet, but audible - a medkit.