I’ve been seeing your character creator pics for a while now, and she looks like a Winnie to me
It’s definitely more casual and cute, whereas Winona is formal and elegant—do you feel more comfortable with either of those presentations? If so, I’d pick that and use the other only from specific Villagers.
As far as I can tell, you won’t be referred to as X from X in-game anyway*, so that combination specially would only matter if you wanted to use it outside of the game.
* neither the passport nor the friend list show the names in that format
EDIT:
Also, I like how Winnie could easily be a nickname for your rl name—it’s a nice balance between something related but still different. If you wanted, you could even have Villagers you dislike call you Whitney and then run them off the Island for disrespecting you!