At difficult time for yo adn Beth but your posting help make us all aware of how precious life is and how fragile it is at the beginning.
In response to your request for how to broaden the awareness for early on set cancer and brain tumors in children here are a couple of ideas, though not very original.
1. Collaborate with and become associated with larger well established charities.
2. Any number of theme parties with silent auctions
3. Any sports event relating to kids achieving a physical goal such as running or walking events, swimming or other events where point,goals relate to a specific donations
4. Secure local and area wide sponsors to donate merchandise and goods for that would go to those making a certain level of donation
Many variations of any of the above including getting having the achievement level occur in the academic arena.
Awareness can also be generated through ad campaigns and pulblic relations efforts.