Sparnik's medics, having stabilized Sparnik, insist that they tend to your wounds after the battle you have fought. Your cuts are cleaned and stitched, your burns soothed. With that, you are free to go.
How do you want to get to the capital? The Grotos are combing the mountains for any sign of Sparnik and his men. They may have brought transportation but it would involve fighting them for it.
Also, the pilot with you is only a mook. He cannot help you fight without extreme risk to his own life, and without him you will not be getting anywhere easily.