Hi there, I have understood your concern. I will suggest you the best possible treatment options.
1 ) First of all do not panic.
2 ) I will suggest that she should opt smoke the Substance again now.
To get rid off the Substance in her body I will suggest the following -
A. Drink plenty of water in the day.
B. Drink plenty of fruit juices like orange and sweet lime.
C. Include more portions of fruits, salads and vegetables and green leafy vegetables in the diet.
3 ) 24 to 72 hours are enough to excrete out the Substance from her body.
4 ) Baby's testing for the same depends on the policy of individual hospital.
Even if they find out the abuse Substance in the baby, they will be giving a
counselling session to you and assurance on your side about quitting the Substance use is expected.
I hope this answer helps you.
Thanks.
Dr. Purushottam Neurgaonkar.