Hi there ~
I understand your concerns for your friend. A foetus is most likely to be exposed to a medication that can be teratogenic in the first trimester of pregnancy
. Unfortunately your friend has been in this window period when she was smoking
weed. I advise you to have her stop smoking weed now, and consult an OBGYN
and a psychiatrist
to help deal with the situation. I wish you the very best in your endeavors.
I hope this helps. Take care and have a lovely day!