Neighbor Wants To Take Me To Court Over Foraging Bees And Other Plant Issues

Hello all. I have a back neighbor who I share a wall with. Las Vegas, Nevada. They have a pool, I have 2 trees with flowers along the wall. I used to have 2 palm trees (removed at neighbor's request because fronds were "falling into pool") and a plum tree (removed because it mysteriously died and because plums "attracted rats", were "falling in [her] yard", and "almost choked [her] dog"). Additionally I have a few rose vines growing on that wall. I do not live on the property, I am renting it out. I have my landscapers come in every quarter to trim whatever is growing over the property line.

Every spring, bees come to both our yards. They forage in my trees and drink her pool's water. She claims I am being a nuisance because I am allowing them to swarm. I have paid for a licensed bee removal contractor to inspect the property 2 years ago. No beehive was found, and they claim nothing can be done except for removing the trees, and even then it won't stop them from drinking water in her pool. They sprayed one time, just for show, because they said the spray won't keep them from coming back as soon as the next day.

Neighbor wants to take me to court over the bees foraging in my trees, and because of plant life growing over the property line (rose vines, which I trim once a quarter. Discerning whether I should have landscapers trim it twice a quarter.). What can I do?