although you've not thought these two dreams to be related, my hunch is that they are.
dream one has seen you working as a peacekeeper, preventing play from
devolving into conflicts. the dark room is suggestive that what transpires
has been kept from your full awareness, which would've taken place in
'broad daylight'. it starts off as if you were watching a show, but by the end
you realize that the activities were related to your personal life experiences
(where the pets have transformed into your sisters). if you've not found
yourself to be a peacekeeper within your family, it may be saying that you've
kept the 'mentalities' represented by your sisters separated, so that you can
choose between them when dealing with life circumstances.
humans are composed of matter, which has been created within various
stars from across the cosmos; we are constructed from elements which
have originated elsewhere, and been brought here to form this world.
dream two sees you as coming to terms with which energies serve to
inform you of your being, and which simply do not belong. [this relates
to dream one, where you'd kept the peace between (playfully) combative
thoughts.] you've described the location, after awakening, as having been
at a cliffside, but it almost feels as if in a hole, with no where to go.
growing that plant(s) to supersize might provide you with the means to
extricate yourself from the scene... climbing that tree as if it were Jack's
magic beanstalk. for you to display the ability to grow that tree with a
simple flick of the wrist is saying that you are 'in tune' with the life energy
provided from mother earth... for you to be mindful of which forms are
appropriate to manifest in this world is to be a faithful servant to the
desires of gaia.