Denver Police say they are following up on any and all tips about her disappearance.
Monge was in the area of 14th and Market Streets in lower downtown on April 1 when her friends lost contact with her.
Police say she was seen a short time later at the Conoco at Speer Boulevard and Pennsylvania Street.
Police are treating this as a missing person case, as her mother pleas for her to come home.
"We won't give up Kenia, we won't give up we still looking for you and where ever you are baby girl I love you so much, I can't make it without you," Maria Lee, Kenia's mother said.
Police are asking that if you have any information about this case to call them or contact Crime Stoppers at 720-913-STOP (7867). You could earn a cash reward and you can remain anonymous.
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