If she see's it from that point of view, she may become one of your biggest supporters because you're doing it to help her and keep her safe.Personally, I don't think I'd like someone recording my movements as well as  everyone that comes in or out of my home.  

How can I gently tell them I need to learn more about them first before showing it to them?

Some of them need to be gently educated that you won't cry if they leave.And I wouldn't worry about her suing or anything, until/if/when that ever happened.  

My wife was home alone while I was working and she stepped out of the bathroom to see movement in the bedroom, so when she looked around the corner, the landlord was sneaking back out the back door.  

(Add "bay area" to your keywords thing to get the joke.)If you're moving to the city/island of Alameda, there's currently a grass roots rent control movement gaining traction.

@Joe Villeneuve  my comments are more directed towards the camp who's motto is" I just want cash flow and appreciation is icing on the Cake"  but its all a personal preference and risk tolerance and historic movement in RE values.And when your born and Raised in the Silicon Valley like myself and started in RE in 1975 I have seen the huge run ups.. so of course I just can't have anything but an appreciation bias for sure..   1975 home in Cupertino were I was raised my parents paid 25k for it.. today its worth close to 2 million and its just a Valley track house nothing special 3/ and 2 with a bonus room and 2 car garage on a 6k sq ft lot...and what you don't have in the bay area is with the very very tiny exception you have NO area that devalued at all...

A gentle nurse addicted to heroin, so he can't pay his rent?  

@Joshua Dorkin congratulations and it is great to be part of this movement!

You've more or less got to abuse or neglect a typical German shepherd for it to be anything but a gentle giant...

Maybe the cardboard boxes are part of the new 'tiny house' movement ... haha!