I found that I have a low tolerance for risk, and more importantly I like shorter sales cycles.

The minor dysfunctions with the people you meet in real estate will soon be easily tolerated. 

Not everyone the same needs (because of risk tolerance, goals, etc).

If you have a tolerance for renovations, all the better, as I do factor renovation cost estimates into my calculations, to pick the ones that will be most profitable, allowing you to put fixer-uppers on a more level playing field with turn-key properties. 

It does take more work to be a landlord, but everyone has a difference tolerance level.

Part of it is gonna be based on how much capital you have to invest - if you’re cool using certain types of leverage, your risk tolerance and so on.

The answer to this question will take into account your mother's goals on how the money needs to work, transition plans in the future, risk tolerance, asset segment preferences (retail, industrial, MF, self-storage, etc.), and many other factors.

This level of organization ensures that nothing is overlooked.Remember, risk tolerance increases with experience.

I find that 'smoking violators' are the ones who will challenge you on security deposit offsets and claim that 'they tolerated the smell since moving in.' 

Just another thought, but again its all about what you feel comfortable  with, your long term goals and the risk tolerance. you are still young and you have a lot of time to grown you portfolio. good luck with your final choice but from what I have seen so far, you posting on Big Pockets and reading thru different post is a massive resource of knowledge and information which means you have made the right choice as a start.