It’s pretty easy to find IRS 990’s on the Trump Foundation.
https://www.citizenaudit.org/organization/133404773/DONALD%20J%20TRUMP%20FOUNDATION%20INC/
Only up to 2014. The 2015 isn't out yet.
I bet the Foundation really raked in big bucks in 2015 based on her potential to be President and really pay off contributors.