Complex sentence: It is implied that she still has a liking for Naoya; she also keeps secret about the fact she is the Queen from Asuha, and regarding Lotte the truth about her older sister.
Split into simpler sentences: It is implied that she still has a liking for Naoya. She also keeps secret from Asuha the fact she is the Queen, and keeps Lotte in the dark regarding the truth about her older sister.