Case Study question for all oncology nurses

I'm working on a case study for school and I've hit a road block. I was hoping for a little nudge in the right direction.

In my case study I am an RN working in an outpatient Oncology Clinic. One of my clients comes in for her weekly chemo treatment. As I'm accessing her infussion port, she tells me that her niece recently moved in with her. She then tells you that her niece was recently diagnosed with TB.

Okay, for me the obvious thing is that my patient immune system is low as she is doing chemotherapy. My initial reaction was, tell her to find some where else to live and give her two masks; on for herself and one for her niece.

I have been unsuccessful in finding resources regarding chemo and TB exposure.

Any thoughts?