I Love My Kids

I have two kids that I gave birth to. They are 14 and 10. My husband and I adopted our son in 2016. He's 11 years old. When we adopted him, my youngest daughter acted out BIG time. She couldn't stand her new brother. She came around eventually. November 3rd, 2017 we adopted two girls. We fostered the two girls awhile before we adopted. My 10 year old is extremely jealous and hates it. She has gotten better but she hates sharing her room, which I understand. I am so happy we adopted these two girls - my husband and I fell in love with them INSTANTLY. However I feel so bad that my 10 year old is having such a hard time with this. :( I am confident that when she gets older she'll understand why we adopted them, and she'll be happy that we did.