Did Easter decorations kill Mandy the Mandrill?

Michael Pahre notes the passing of the Franklin Park Zoo's Mandy, but wonders if she really just died of old mandrill age. He and his daughter visited the zoo the day before her death and noticed how all the exhibits were decorated for Easter. He doesn't remember anything in particular about the unmemorable mandrill display, but:

... If there turn out to have been Easter decorations introduced to the mandrill exhibit, I expect that the investigation by the Franklin Park Zoo into the mandrill's death may have to look at the possibility that she ate something inedible. As noted by the Globe ... Mandy had a history of "chronic uterine ailments," but her death nonetheless appeared to be sudden and surprise the zookeepers. ...