User blog comment:Webkinz Mania/Project 10 - June 2017/@comment-32051746-20170602044507/@comment-4726418-20170602131210

The reason Heather told Alejandro about the idol was because at the start of the episode they aligned with each other, indicating to each other to tell the other what was going on as an agreement. They of course break this instantly and plan to eliminate each other because their rivalry has always clouded their strategic capabilities, just look at World Tour. So when Heather picks up the idol, it's only after she's convinced the entire team to vote Alejandro off. She felt too secure and in order to NOT get him suspicious of her would tell him about the idol. It's like when Scott told Zoey he found the idol in RoTI. While it's slightly exaggerated, in retrospect I understand why Heather was so rash with her thinking because when you feel that secure that your opponent is being eliminated you don't really think as hard. Heather got mad at Chris because she completely underestimated Alejandro, the same way he underestimated her in World Tour.