I apologize for sounding as if I don't care but your story has not shown how that God has lied in any wise,and it more of seems like you are venting,in my view it would have been better for you to have made a prayer request in the prayer request forum for your child,instead of making a thread asking if God lies because if you "read" the bible God has done many miraculous things for people,take abram and sarai,later renamed Abraham and Sarah for example,God promised Abram that his seed would be many and that he would be the father of many nations,but when God told abram that he now be called Abraham and Sarai be called Sarah,and that he would now fulfill his promise,saying that they would have a child,while Abraham was now a hundred years old and Sarah was now ninety,and both laughed at this,and God replied particularly concerning Sarah saying"why didst Sarah laugh when told that she would bear a child for is anything too hard for God,you see God does indeed give us our desires but not always in the way we want,your child can have what they desire,but this doesn't just require faith,but prayer as well,the more prayers that are sincere for your child the more God will take notice of the child's affliction and seek to heal it,for remember as Jesus said "one must have 3 witnesses to make a a true judgement,so thus meaning whether one makes a statement of what is true or one wishes for one to be healed,there must be at the very least 3 people to pray for the child,they must faithfully desire for the child to no longer be afflicted,and have compassion not pity for the child,and God will answer with a blessing of that you can be sure!