Conversation so far:
What are the New 52?
In 2011, DC Comics relaunched all titles, deemed the New 52, which rebooted the DC Universe continuity.
Did the reboot include Catwoman?
Catwoman's monthly title now focused on Selina's earlier days as Catwoman, but not her origins.
The series begins with Selina frantically escaping.
What was Selina escaping?
The series begins with Selina frantically escaping from unknown masked men who are invading her apartment.
Did this event lead to her meeting Batman?
After flitting from rooftop to rooftop, Selina looks back just in time to see her apartment blown apart by explosives.
She turns to her informant.
Who is her informant?
her informant, Lola, who often supplies Catwoman with information and various jobs.
In this instance, Lola tips Selina off to an unoccupied penthouse.

Question: Who blew up her apartment?
Self-contained rewrite: Who blew up Selina's apartment?