I think for me, Pearl is one of those characters (kinda like Marlene or Nanako) who the game tries to write as endearing or kinda sheltered/unsure of themselves, rather than the annoying bratty types of like a Relm or Eiko.
Pearl's just excited about life, cares for Maya a lot (and both likes Nick, but doesn't take his bullshit), and the weird quirks she has aren't always in your face every five minutes. They do just enough stupid bullshit where it doesn't say, "This is all her character is, and this is all the "comedy" we could make for her. LAUGH DAMN YOU!" Like a Teddy or Ringabel being a perv every five seconds.
"Evening caress, Always yearning, I must confess, The stars aren't burning"
Copernicus - Candlemass