Welcome to HealthcareMagic
As You told your girlfriend is chronic cigarette smoker and marihuana user and now she getting pregnancy
related problems as abortions etc.
Let I first tell you that Nicotine
and Marihuana are both causing ill effects on our body. They also have a bad effect on the fetus. It hampers the normal outcome of pregnancy. Other than this causes heart problems, respiratory problems and most dreadful of all Cancers ( various)
So try to leave the addiction for normal healthy life. Doing wrong and expecting good results is not fine. Don't blame god everything in your hand.
Have a Addiction free Healthful day..