Family needs help w broken home

A woman, whose family has been through so much in the last 3 years, needs the community's assistance to bring the house up to living conditions.
She recently lost her husband to cancer after he lost his battle after 3 long and financially straining years. She's dealing with her severely autistic adult son and daughter while trying to provide for them with no help as she has very little friends and barely any family near her.
Several contractors have taken advantage of her, demanding cash for jobs and not completing work, roof may have a possible leak and daughter's bedroom ceiling is quite possibly full of mold.
Leak from the only small bathroom going to the main floor, near electrical units.
She's run out of money and just needs to home to be a safe environment for herself and her children.
David White design firm in Toronto has graciously agreed to oversee the work and bring in as many tradesmen as possible who can volunteer their time to complete this project. The money raised will go towards all necessary supplies and materials.
Any help is greatly appreciated. Would like to pay it forward this Holiday season.