As usual with Valentine the fight takes place in the Root universe. Star and Stripe’s New Order cannot affect Stands unfortunately because the very concept of what they are is beyond her understanding as it is beyond the understanding of most readers.
If she’s lucky in deciphering the Multiversal enigma that is the president of the United States, then her ability can work on him directly.
Round 1. Star and Stripe vs Dirty Deeds Done Dirt Cheap
Round 2. Star and Stripe + Shigaraki with New Order vs Love Train
If she’s lucky in deciphering the Multiversal enigma that is the president of the United States, then her ability can work on him directly.
Round 1. Star and Stripe vs Dirty Deeds Done Dirt Cheap
Round 2. Star and Stripe + Shigaraki with New Order vs Love Train