When Dr. Eric Border exposed his true identity as the Joker in the asylum and infected a portion of Clayface with Joker venom, unleashing the new monster Clownface, Silverlock was awakened from her coma and escaped from the asylum in the confusion.
The events described involve Dr. Eric Border revealing his true identity as the Joker, infecting Clayface with Joker venom to create a new monster called Clownface. This led to Silverlock waking up from her coma and escaping the asylum due to the ensuing chaos.