After receiving an eviction notice how many days after do I have to leave the premises?

My mother is elderly and my disabled sister live together and the landlord filed eviction papers on May 22, 2015 for late rent payment of May 2015 rent (which was paid on May 27,2015). 

On May 29th the landlord receipt stated they had a late fee of $60.00 for May and that was all. Three days later they receive a letter stating a court date of June 8th for eviction. They did not pay the June rent as they are  both on social security and if they were still evicted would not have a penny to eat on let alone find somewhere to move. 

The judge did not let anyone explain the situation and just said you are evicted as of yesterday. On Thursday June, 11th the sheriff served them a 48 hour notice to vacate the property.  I am my sister's legal guardian and have never been notified of any of this except for what my mother tells me as I had major surgery on May 26th and cannot drive yet to help with anything.  

Coincidently this all started the day I told the landlord and her new property manager that my adult daughter slipped on the ice in the driveway while visiting my mother and shattered her wrist which required surgery and now has a metal plate and 8 screws in it. She did have her 12 year old son and his friend with and they did see her fall.  The landlord is responsible for clearing the driveway which was never cleared. My mother and sister have complained since they moved in that the water smelled so bad they couldn't drink it. 

They have lived there for over 3 years and have had sewer problems at least 10 times. I bought a water test kit from Menards about 4 months ago and it shows that her water out of the faucets is contaminated and she has been trying to get the landlord to do something about it but doesn't get anywhere (except evicted). 

I am at a loss as to what to do as she has only 6 hours to pack and get out. Is it really possible to be served, go to court and be thrown out on the street for being 13 days late with rent which she had when she went to court on June 8th and still is willing to pay if she could get some time to find a place. SOMEONE PLEASE HELP ME WITH SOME ADVICE AND ANSWERS