She is playing a game that gets her attention. Putting her in the garage won't help because she will not make the connection between getting on the table and being in the garage. She'll just become more starved for attention, which will reinforce her game playing to get attention.
There must be cat forums with people knowledgeable about cat psychology who could make some suggestions.
Okay, I Googled and came up with the following forum about cat behavior. Couldn't find your particular problem in a search there, so you may want to post and see if someone can help.
http://www.thecatsite.com/forums/forumdisplay.php?f=5