Lynette being emotionless, but cunning is more similar to Arlecchino. She even carried Lyney to cross a river & forest while they're being hunted on one of their missions before. She also have some more similarities with Arlecchino in terms of their attack patterns & fighting styles.
Arlecchino doesnt have a world passive like the other characters (like 15% increased running spped etc) all 3 of her passive are for killing and defending herself from enemies
Did you know that Arlecchino taught Lynette to attack, as you can see in Lynette basic attacks are similar to Arlecchino, so this video shows that Arlecchino's favourite child is Lynette...in a strange but cute way.
Hmmm. I noticed that arle drinks air while Lynette drinks leaf juice (tea). is this because Arle drinks the tea/leaf juice vapor that Lynette leaves behind?
It's not like she is particularly special to her... If you observe closely you will notice all three playable children has inherited one of Arlecchino's habit like Lynette inherited her love for tea or coffee or perphaps desserts..