@Endrel
I think you mean “implication”, and you stated it more like it was fact.
And no, it really didn’t imply that Rose had a kind of power over them, more that she can make a kind of coonetion with them, not the same thing.
Lion is an enigma, we have no real idea if Rose had anything to do with how he came about or even if the form we see is his true form(see the theory of him being a part of Pink Diamond and such), so she may have no kind of power over him.
And the Magic Moss is also somthing we really no next to nothing about other then what we see, so again, she may not of had any actual power over it.
The implication is that she has some connection to the two as the Gems really did not understand ether and how Steven is able to, this can be that she formed bonds with them that carried over to Steven.