This also explains why I received additional funds at the beginning.
In other words, she was able to obtain good equipment for herself as well as support her chosen hero, Motoyasu.
If Motoyasu alone started off with equipment far better than the other Heroes, then even he would find it suspicious and be wary.
With such meticulous planning, there's definitely no way to find the truth other than from the culprits themselves. In the end the result was a worthless, criminal Shield Hero and the Spear Hero who magnificently saved the princess.