Assistance Needed to Remove Oak Tree

Sonja, a neighbor on Risinghill, had huge Oak tree limbs fall into her neighbor's yard.  The estimates to remove them are over $5000.  There's also a chance she'll need to remove other trunks on the tree at additional costs.  Here's her message and pics of the tree:

"Hello, I have a very large section of my Oak Tree in my neighbor's backyard. Not sure how we are going to take care of removal and perhaps the rest of the tree too due to possible root damage. Any financial help would be a appreciated. I can be contacted at 791-8865."