I'd stay quiet, she's actually doing you a service, now instead of recruiting those friends of hers joining in with their like mob - mentality to your properties, she's actually deterring them, resulting in a free layer of tenant screening. but do continue to monitor/document if you are so inclined in case this escalates.

The more entities you have, the more layers of complexity you introduce in the legal and accounting side of things, but the more protection you potentially grant yourselves.

Choose a darker color that will contrast against the light color of the cabinets and will mask some stains/mud.

Can't tag, things are buried under 3-4 layers...

If you have the right subfloor for tile, or are willing to replace what you have with what you need (plywood, hardibacker, additional labor), tile is the best product.Search youtube and BP for installation tips, but the basics are:-level, 3/4" subfloor - no movement (sometimes requires shimming or replacing joists)-layer of hardibacker or cement board -plan and play with your start/end points and layout with tiles before mixing any thinset/adhesive-aim to avoid "skinny cuts". try to have as many whole tiles and half tiles as possible-for floors: use a thinset (mortar based) product to adhere tiles to floor-for walls: use the thinset OR pre-mixed glue adhesive to adhere tiles to wall-after proper dry time, mix grout and apply to all seams.

Having to wear a mask might make it more of a grind than it already is.https://www.gregbuyshomes.com/ 

Beard is trimmed very close these days for comfort while working in my mask.

You can apply a layer of soundproof sheetrock to the ceiling.

As I was masking off the floors to start painting, I got hit in the face with with overwhelming ammonia smell from that corner.

Your roof rafters may be undersized or your house may have 4 layers of shingles....