Why did Dorothy feel lonely?

From the text:

"The North is my home," said the old lady, "and at its edge is the same great desert that surrounds this Land of Oz. I'm afraid, my dear, you will have to live with us."

Dorothy began to sob at this, for she felt lonely among all these strange people. Her tears seemed to grieve the kind-hearted Munchkins, for they immediately took out their handkerchiefs and began to weep also. As for the little old woman, she took off her cap and balanced the point on the end of her nose, while she counted "One, two, three" in a solemn voice. At once the