She says she's cured after/since the taking of the elephant from the clyde beatty circus BUT the bank heist and foiled attempt at the chase bank occurred after the elephant was taken.
In the last scene, when Lucy brings the baby elephant out of the bedroom, you can see that the coffee table has been propped up on four blocks to make it taller.
After Fred and Ricky see Lucy take the cuckoo clock, she leaves to go to her apartment. The men then go on to have an entire conversation about her being a kleptomaniac, finally leaving through the back door to sneak up to the Ricardos' apartment. Yet as they walk into the living room through the kitchen door, Lucy is just now coming in the front door. She didn't make any other stops after taking Fred's clock.