You have however not provided any information regarding whether the tenants rent is at market or not.

It's even fine to not if you invest by yourself. 

You might already know this but if you add "San Angelo" to your keyword notifications, you will be in the loop on every conversation regarding San Angelo.

Look it doesn't matter what you think the listing agent is doing or not. 

Plus, it’s hard to ignore a notification that pops up right in front of you.

In Texas you have 30 days from when you receive your tax appraisal notification to protest. 

You just need to provide a way for the tenant to be able to provide you with a formal notification.

You can turn on motion notifications when no one is there.

The landlord and her son should check with their legal counsel to ensure they are taking all the required steps and providing the necessary notifications for the jurisdiction, but it is quite possible they will be able to take the actions they wish.

The tenant has access to me by snail mail, email and text.In order for the tenant to be in compliance with the lease, should I have received written notification by Feb 29 or is it acceptable for the notification to be dated by Feb 29 but delivered by snail mail at a later date?