>>48705936>created to be an attractive character without unneeded fan-service like in some shonen manga, portraying a mature yet beautiful adult character that is warm and comfortingNah man, she's definitely Maetel. Same long blonde hair, lilthe figure and ethereal beauty. Their outfits even have the same ruffles.
If that's not enough, compare Cynthia's dynamic with the player character in DP to Maetel's relationship with Tetsuro. Masuda most likely grew up with Galaxy Express 999 and used Sinnoh as an excuse to make his dream waifu the most powerful trainer in the game.