I have never gone through the journey of a surrogate, but I feel like it has the same feelings as getting pregnant with your own child. I am six months pregnant I can realise the moments and every pain. A surrogate mother is going through the same journey. It’s her highness she kept someone’s baby and bear it for the infertile couple. All the emotions and love is for her. You are among them too who is volunteering herself for her sister. Best of luck to you and intended parents.