Cherry Tree

We have a cherry tree.  A very sad cherry tree.  Though despite it's unhappiness it did manage to put out a lot of cherries.   Anna climbed a ladder to pick them and then made both saft and cherry fruit leather.  If you look at the tree, the top has no growth, some of the branches have no growth.  We know something is making the tree very unhappy - but aren't sure what it is.   We are guessing the roots are having trouble getting nourishment, as it's planted near to where there used to be a driveway. Perhaps the ground is too compacted?  The poor tree has been shooting up so high to get to the light, and it has such giant spaces between the branches.  We are going to take down a ton of tree and hopefully get some help from a tree doctor to figure out what ails her.  In the meantime she was generous enough to give us lots of cherries.