Feeling unsettled & disturbed?

Why would God answer a selfish, wicked prayer? A relative of mine has for the past few years admitted to me that she has always encouraged her teenage daughter to have so that she could become a grandmother. She loves children and feels lost now that all of her own have grown. I have been praying for the past few years that God would lead her to understand this requests was not only selfish, but against the lifestyle God expects us to live. I receive a call this morning from her that she is rejoicing because God has answered her prayers. Her 18 yr. old unwed daughter is pregnant. I have to admit I felt somewhat resentful, not only because she obviously still doesn't see the wrong in this. But a part of me feels rejected by God because my husband & I have been trying to conceive for the past 8 years with no luck. We have prayed for a child in our lives. We both have no children from previous marriages and relationships. We have always been faithful to God and choose to live by his word. I decided to wait until marriage to have children, which I know was the right choice. Yet, in some small way, I feel punished. And my teenage relative is rewarded for her promiscuous lifestyle. Her mother, rewarded for unGodly requests. Why is this? What possible message could God be sending me?