After playing the challenge with my custom units, shes not so tough. The terrain makes it tough with limited space and limited supply docks.
The map script is flawed - you can win by destroying all her command centers!
very easy. Other generals require all buildings destroyed.
To make her a real tigress;
All buildings have the autorepair module and spawn rangers upon death.
All combat units should have horde module except heroes.
All vehicles get composite armor/aircraft armor respectively.
Patriot defense should be using EMP like superweapon general - instant kill infantry and subdues vehicles, better than standard patriot.
All infantry have chemsuit armor from start.
All combat units created as veteran and have weapon damage bonuses.
Strategy center power would be a big booster.
All aircraft have point defense laser.