Souraya,

please don't even think that you are a terrible mother. You are not, it's obvious to anyone that you have Drake's interest at heart. Sometimes we all do things that we might regret later on, this is just one of the horrible things that happen. The main thing is that Drake is on the road to recovery. You will see, Drake will be back to his mischevious self in no time so please, please don't blame yourself. Take care, a hug to both of you.