That does sound like fun!

She sounds like a bit of a hothead

I’m not sure where the FML is here. Everyone in the story seems to be having fun, and isn’t that what it’s all about?

Well, unless it's into some serious kink, I don't think the tree got anything out of it.

I mean it sounds to me like the sister was trying hurt op so not really, after all getting down a butning tree you either jump off or climb down and burn yourself

She was right. Gotta make S'mores somehow.

Your sister sounds awesome.

Are you:
a: From Wisconin or Alabama
b: In a romantic relationship with each other and
c: Usually wearing camo or dungarees?

F(the trees)L

Sounds like my kind of sister

can't even paint the picture of you chasing your sis all over places after you finally manage to get down the tree

You must have either climbed a dead tree, or it was soaked in gasoline. Otherwise it would have taken an awful lot to light a tree on fire, and given you plenty of time to climb back down. Unless it were a pine tree that was dry I guess.