"Well... I have a little exercise matt I rolled up, I thought I'd roll it out on this branch here. It's going to get cool tonight so I'll sleep in my jacket, but if I'm too warm I can always use that like a pillow or blanket or more padding... I guess..." Fluttershy wasn't really sure it would all come together, honestly.
But she braced herself against the tree's trunk and tossed the tarp over some of the branches hanging over her own, then secured it down. She used a few more pieces of rope to attach a makeshift flap to the front. Was this still roughing it? She had no idea. Maybe she got points for being creative.
Though she guessed no one was beating the woman who'd made her own rock fort out of... thin air, apparently.