The Midrash (Rus Rabbah 3:6) explains that the name, "Naami," is also a reference to elegance. Naami had once been a woman of wealth and status, and her acts were elegant, refined acts. The people were saying, "Is this the elegant one?" Now she was barefoot, with ragged clothing.
The whole town was shocked to see Naami in her state, on her returned. If the whole town turned out, it is obvious that her fall must have been great! People extended extraordinary generousity towards Naami, giving her stuff because she was so impovershed, and forgiving her debts.
Naami said, "I departed from here as a full person, and Gd returned me empty." By saying this, Naami was admitting that what befell her was Gd's Judgment and not a random event.
http://ohave.tripod.com/chumash/naami.htm