I just Google’d her. The top 20 entries were articles about the sign episode - including the article above.
But no Wikipedia entries or links to videos of her singing, such as on YouTube.
The 21st Google entry is this FreeRebublic page!
So basically she was a no talent that had her 15 minutes of fame and faded away quickly.
Yep, her only notoriety and contribution was to be an attention getter for being rude. Me me me