10/12/2009 AT 01:00 PM EDT
's mad, and she's not going to take it anymore. After dealing with the especially painful loss of maltipoo Daisy, who was taken from her back yard by a coyote on Sept. 14
, the singer has apparently been inundated with false sightings of her beloved pup.
She took to Twitter late Sunday night to say, "People have been contacting my family and friends saying that Daisy has been found. Untrue. People are so cruel. Please respect her memory."
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