Looks like her name is Rachael Kinley. Love the REAL EUF/ENFs!
Here's what she wrote about it:
The next thing I know, they start to unbutton my shirt. The Korowai are both amazed at the lifting properties of my Gossard Superboost bra. They begin to imitate its effect by cupping their own breasts in their hands with curious looks. It feels slightly surreal to be sitting, metres up in a jungle tree house, being communally undressed by several women and children. I help them to unfasten the clasp and the women stroke my breasts, smiling, giggling, repeating am am am.
It’s lovely, it’s touching, we laugh together and are definitely bonding. But amidst all this, my mind is thinking why couldn’t this be at the end of the four weeks in the jungle when I’d definitely be much thinner…. I guess that you can take your clothes off in the jungle, but it’s harder to get your head out of the UK.