Using alcohol and Marijuana several times a week

You have been asked to work with the following client who has alcohol and/or drug issues. 17-year-old pregnant female (28 weeks), using alcohol and marijuana several times a week. Unstable accommodation and says she feels stressed which is why she drinks and smokes. Has an ok relationship with her sister and has a really close friend who has a 6 month old baby. She has a history of self harm.

1.How do you ensure you work in a way that is consistent with the current values and philosophy of the AOD sector? (Consider legal and ethical obligations)