I saw that too, but the girl's swarm ability is to raise the gem by 1 level, and the level 3 gem appears in the first turn of the game！
Girls of 'Ladies of the Night' all have the perk - 'Fire active abilities start the fight with 3 gems charged'.
At that time(Nov. 11, 2022), Titania didn't have any ability(you couldn't see the item of ability in the panel of maid),
but after several hours, she did have the ability named X(you can't view the ability name before you ger her) - '(lvl. 6)40 random gems except the fire ones switch their element to fire and increase their level by 3'.