[Maria turns and gestures down the hallway.]

The last room closest to the stairs.

[That said she notes:]

I was considering seeking something out with those ... electric lights? That's it, yes?

[Look, she's more into politics than science. There might have been experiments and papers written for centuries on the topic but she certainly hasn't read many of them.

Either way she gestures to him now before she turns to lead the way. It's not like her room is any different from his once inside of course -- just as dark and all that.]