Err actually if you read the article there's a heck of a lot more to the story than she took a drug and then had complications. She had major blood loss, and an early cesarian.
In fact 1000s of women take pethidine whilst in labour which is an opiate.
Sometimes these headlines go for the shock factor.
It wouldn't sound as exciting if they said: Woman had ruptured ovary and major bleeding of unknown cause leading to a coma and her baby being delivered early with the risk of brain damage.