This page shows the public commission progress for Arimah. Most updates are public so you can follow how this artwork was brought to life.
here is 4 possibilites. I guess some relaxed poses were what you imagined? despite there being a log/tree stump in all of them they can easily be replaced by a rock. I tried sketching in both rock and stump in the upper left one indicated by different color ^^
another option to have a more open pose would be the top left having the right hand down braced againt the trunk, head heigh and the left hand reaching towards the side of her face maybe fixing a flower crown or something :)