Just load up the neighborhood dogs with plenty of kibble and treats, maybe some beans, and have them do their business on her driveway. Insta-poo!
As for the tampon attacks, it would be far more infuriating to have your window pelted one at a time at irregular intervals, so you never know when it's coming! We need to enlist her next-door-neighbor for this one.
Also, someone should come up with a big "Got Valtrex?" sign that faces her house. Where's Banksy when you need him...