I didn't explain it very well but back in V5 Ren did say that a semblance is something of a reflection of a persons personality, like their core of their soul is their semblance.
Other people think that a semblance dictates how a personality comes out and that when it manifests that person is fully at peace with who they are.
But others don't see a connection at all.
But the first one does link into Weiss as she has a hard time getting her semblance going while she is running from her father and avoiding him.
That said, Weiss has always put a lot of emphasis on being who she is, a Schnee. She wants to redeem that name in her own eyes and the eyes of the world.
Her semblance being the Schnee semblance makes sense going though the first option, if Winter is the same way(and from what we've seen she full well might be) it does make sense.>>105326106
I meant Willow being the Winter Maiden.