Contested Fae Romance YA fantasy novel I read in library between 1994 and 2000. Protagonist girl falls for cold and intriguing guy (maybe named Percival? Parsifal?), finds out he’s the prince of Fae and his mother does not consent to their relationship. At some point mortal protagonist saves him or the mother AND him from iron-related trap, thus earning her respect. Cover had small pointy leaves on left side.