Does anyone remember in the Caylee case a few make shift memorials were found? In a couple of instances, I remember rumors that some of the materials used in the memorials (J Blanchard Park, maybe?) were identical to materials found in the Anthony home. Many people were convinced Caylee was close to this memorial in J Blanchard Park. Being a Florida resident, it is possible Misty heard snippets from Caylee's case and people begging for the area to be thoroughly searched.
So, during one of the searches, maybe Misty overhears somebody saying, "We found a red plastic rose and I thought we might have something."
In the most innocent explanation, Misty overheard something about a rose and her gut feeling is telling people to re-search the area. In another explanation, Misty knows where Haleigh is and wants her to be found and have a proper burial. In the most sinister explanation, Misty is re-directing LE away from the body for her personal gain.
Whether she is lying or not remains to be determined.