Because girls are abandoned by their biological parents.

Actually, your parents don't want to abandon you. Life forces them to have enough conditions. Who wants to abandon their own flesh and blood? Of course your parents want you to have a good life. It's just that you're too old to say these words. If you talk about them, you are afraid that you will hate them even more. You should learn to be strong and stand on your own two feet. Your adoptive father took you in, and you are his own daughter. Don't think too much, don't filter too much, don't feel. Get happiness, spread your happiness to everyone around you, and your adoptive parents will like you more. If you are always so unhappy, you will make them unhappy. Don't think too much, don't have ideas. You are an important member of your family. When you grow up, you should feed them and repay them. So it is right to eat and drink now. He is your biological parents and treats you well.