Canterbury Police were keen to talk to Ms Forcier, to help confirm Celine's movements. Canterbury Police had also left messages with Ms Forcier's family.
"This is a timely reminder for anyone planning a tramp to let someone know where you are going, when you intend returning and when you are back," a Canterbury Police spokeswoman said.
"If you're staying in a hut always write your intentions in the hut book. Police also recommend carrying a personal locator beacon when you're heading into the mountains...so that you can call for assistance if you get into difficulties. Always check the weather forecast before you set off and take enough supplies in case your return is delayed."
Police said Celine, Ms Forcier, or anybody who knew their whereabout should call police on 03 363 7670 or message them through the Christchurch Police Facebook page.
People could also provide information anonymously to Crimestoppers on 0800 555 111.