Emergency Move during the holidays

My brother and his family were told by their  landlord he was selling the house. He’s been home with the kids because of the pandemic, he is high risk because of his heart. My sister in law is working. My niece is a special needs beautiful little girl and having to move is making it really rough for her. No 10 yr should have to move at Christmas time.  It’s the Holidays and they need a home to move to.  Please help!! Anything at all will help them get into a new home. If you know someone that has a place in the Allen TX area.  Please help me give them the best holiday.