Has she never stepped foot in a red state?
“Has she never stepped foot in a red state?”
That’s not how jurisdiction works. The court has to have jurisdiction over all parties in a lawsuit, i.e. it has to have the authority to force a party to submit to its rulings (juris = law, diction = speaking). Plaintiff is easy - they brought the case there so they chose jurisdiction. Defendant has to either live in the state or have sufficient minimum contacts or have committed a tort in the state or committed a tort outside the state that caused harm inside the state. There’s all sorts of technical rules and it’s literally the entire first month of your first semester civil procedure class in law school.