Advice please

I rent a house from somebody who is in her 40s. She’s a very nice women. I’m 31 weeks pregnant and she is allowing me to stay in her house with my baby. However, she smokes marijuana. She told me she isn’t going to stop. But when my baby is born she said she will close her bedroom room and open the windows. (She only smokes in her room). Moving out isn’t an option for me right now.

Should I be concerned about this with my baby?