No. HC went into nature because the Govt wanted Temasek to take over Zoo and Bird Park. And Mandai is an extension of the Zoo and it went from there. Don't be surprised if a book or press article comes out in the future where the entire back to nature and all the projects around it is credited to her. Just like the Zoo and the Birdpark was the GKS's vision. They probably wait for one generation and Bernard Harrison to die so that they can revise history along he way.
What is there in Mandai that HC agrees to partake in Mandai. Where is the money $ ?!?