I only watched a bit with my younger sister (13), it struck me as a pretty standard power fantasy show - middle school sucks but what if you were super cool and competent and also in the special school for monster people. Harry Potter was definitely a strong influence, but it has more of a spooky vibe than a fantastical one which gives it what I'll call an "entry-level goth" appeal.
Isn't she also supposed to be stronger as well? I watched most of it, it isn't bad. At least it stays somewhat internally consistent.
I really like the Addams family "franchise," and so I'll watch any content branded thusly. (By piracy, of course.) But I had my issues with this series.
Wednesday Addams be like: "Bad Thing?"
*rolls dice*
"Actually, we do Bad Thing for fun!"
I hate to be that lib, but it sounds like the plot of this show is basically just the Chamber of Secrets