Just listened to part of Wendy's interview on Survivor Fans podcast, and she says that she and Jimmy J. got the tree mail for the older tribe, and there was NOT an HHI clue there. But after watching the episode, she does think that the Older Tribe probably got a clue, and she guesses that Jill found it and shared it with Marty.

Also, here's her take on each of the players on the older tribe:

Jane: Really hard worker, great person
Jill: Wanted to be on the show for a long time, happy to be there
Jimmy J: Very knowledgeable, knows what to do and say
Jimmy T: Misinterpreted by people. Seems harsh but really has a kind heart. (Does that mean she gets to know him better at LL?)
Marty: Will do what it takes to get far. But not a good judge of people or character. (Interesting comment)
Tyrone: Quiet, secretive, doesn't let people in.
Yve: Really wanted this bad. Will do whatever it takes to get it.
Dan: Didn't do much at camp. But if he plays his cards right, could go far.

Re food: She said that they got some hermit crabs and there was some fruit around camp, but it wasn't ripe and people weren't tolerating it well. She said they had very little rice.

For some reason I couldn't get the entire interview to play, so I might have missed some other stuff at the end.