That is all a very bad idea, especially the tree part!
Paint her a picture of a tree on the inside of the window she looks out of toward the well. Or keep any trees at least 100' away from the well. This is a time to demonstrate logical and practical forward thinking and self discipline. Any plants around the well will be destroyed if you need to pull the pump; I've had to do that and it ain't pretty afterward.
It was at 10 PM and the lady insisted we didn't damage anything, and then anymore than we had to, well maybe 10% of a large old flower bed wasn't trampled. It was that or she could continue to try to live with no water.
And she already had one guy show up and then refuse the do the job because of the flower bed. She failed to mention the bed to either of us.... In the dark, I tied a rope around the big plants and pulled them out just to get to the casing. She had an oval bed about 10' x 15'. That's years ago and I still remember it like it was yesterday. After tripping over stuff about three times, we stomped all of them within 8' all around the casing. Plus she paid for the hassle and about 2 hours extra time it took.