Should I let my mom vape in the house

My mom visit ecafter my first was born, I had one rule... you can only smoke your e-cig in the spare room. She did pretty well with it.

Well now she’s come BFP for baby 2 and the nursery is where the spare bed is. My newborn won’t be sleeping in there until my mom leaves, but I’ve heard that the vape oils can get stuck to the paint, drapes, etc. I know my mom can’t go without it, but I don’t know where else to let her do it besides kicking her outside.

Should I just let her cap in the nursery and clean everything, or tell her no.