That is a cute nn! It's definitely better than
Prissy or Priss, which would be a reason I wouldn't name my child
Priscilla.
Presley has actually overtaken it, but even that's sounding dated & over-trendy now. I happen to like the concunction of Precille. It sounds fresh, can't be called
Prissy, and isn't reminiscent of
Elvis. Like it?