One of the other interesting dynamics in a price-crazy market like San Diego is the landlord-tenant interaction.  

I learned not to show units while occupied, mainly because applicants can't visualize their stuff in the apartment, if the current tenant's stuff is still there.  

A visual inspection done by my Handyman on 21st July 2016 and then again myself on July 25th 2016 did not show any visible signs of leaks or moisture. --- (your daughter) was with me during my walk though and we both saw no signs of mold that day.An AC technician was called on July 31st.

It's about providing a living space for someone else for a price that's determine by market dynamics and econ 101.  

But, it is kind of a weird dynamic that after getting a great deal for years, tenants will get angry at the landlord who has been so good to them, for asking for what they should have been getting anyway.I find the psychology interesting.

You must clearly spell out or paint a visual picture of what will likely happen if the tenant ignores your memo.

Do we know the family dynamics?

Julie L. also has some good points about the listing dynamic right now.  

I think you are right - the aunt's remarriage probably generated a lot of family dynamics which just came to a head.  

There is still value to reading and listing here, just do so with a healthy skepticism and rather than try to copy what they do try to understand the reasoning and governing dynamics behind it so that you can apply a similar thought process and come up with your own way that is custom built for you and your market.