In the first few Pasukim of megiilat Ruth we see that the main characters are very selfish. They are wealthy and when there is a famine, they go to Moab not for food, but so that they will not have to stay and help out. They end up staying in Moab and marrying women from Moab, Ruth and Orpah. When Naomi says that she is leaving and going back to Israel, she tells her daughter-in-laws, Ruth and Orpah, that they should go back to their people. Naomi says this because in Israel they would be the lowest of the cast system.
     But surprisingly Ruth says that she will not leave Naomi. Ruth is giving up her life and any opportunity to have children so that she can go with Naomi. This is something that should surprise Naomi and Naomi should thank Ruth for coming with her, but instead Naomi acts very differently. Naomi decides to ignore Ruth and be very rude and ungrateful.