So Azem (along with Majima) procured a map of the underground. Not sure where that map ended up but she could easily recreate it if they want to use it to set up ambushes or anything of that manner. She's also been down there so she kind of knows her way around.

She's also been itching for a fight even though she's not nearly as powerful here as she would be back home. But if the majority of the group wants to take a subterfuge/sabotage route she'll be down for that.