If you put the house in her name and you have siblings or other folks who would have a claim as a direct heir on her estate, you run the risk of losing the property to another heir. 

If the answer is yes, then it's a no brainer to make minimum payments on your 2.8% interest rate mortgage, and use the funds that you would have paid extra to pay it down faster, to either invest in more real estate, the market, or anywhere else where you can get a ROI > 2.8%.If the answer is no, then feel free to aggressively pay it down as fast as possible, to become debt-free faster, and just have a large amount of money in savings or to splurge with.The bottom line is that your 2.8% mortgage is GOOD debt.

@Karl Kauper, There are several ways to mitigage (but not remove entirely) the angst and risk of those tight timelines.1.  

@John Reagan Johnson hope you don't mind a PMC answering, but most of our clients hire us because:1) They live out of state and don't have time & expertise to remote manage2) They don't have the time to manage3) They don't feel they have the necessary expertise and/or don't want to risk learning as they go and making an expensive mistake.Go read Kiosaki's Cash Flow Quadrant book.

You have to pay fees, but you'll have a professional handling issues instead of bleeding money trying to figure it out for yourself, then you have your time free to pursue other things.

If you ever want to chat or brainstorm strategies, feel free to connect!

If you have questions, feel free to DM me or drop a comment! 

Too much risk?

I hope this is a help and if you need any help with financing options feel free to DM me.

My plan for doing that is to acquire 40 properties with partners and pay off 40 of my own properties and have them free and clear.