Support for Kids Who Lost Everything in Fire

my great niece and nephew are nine and 12. Their mother passed away three years ago and have been staying with my sister when their dad works at night yesterday morning. He got a call while at work that the house is a total loss due to the fire. They have lost everything the kids had lost everything that they ever had from their mother, asking for compassion whatever you can donate would be very much appreciated and thank you for your loving support and prayers.