Refinancing involves some closing costs. You can figure out exactly how much interest she would be paying over the next two years, and then make an educated decision. I would never venture to answer such a question in a vacuum, without knowing/understanding what else is going on in the (financial) life. Maybe it makes sense to pay off with other funds that are earning close to nothing. Maybe it makes sense to get a HELOC and pay off the first loan.
Does she have any plans for a time when this home might not be a good living arrangement for her? Any will, trusts and durable POA in place? Having a durable POA is of greater consequence than the decision about the mortgage IMHO.
remaining interest is between 3-4k
B'h she is financially stable and it is not that she needs the money from the refinance, it's just that I'm wondering if it's financially smart to let so much equity sit doing nothing in the home value given the very low interest rates and being able to use the interest tax deduction.
I'm wondering if it might just be worth it to refinance/take out a new mortgage and put the money in some very safe investments like a triple tax free bond portfolio that would beat the current mortgage interest rates.
I do not think she will ever sell this home, she is very attached to it.
I agree on the Trusts/Wills/POA but unfortunately some people do not like to think about those things and avoid making those arrangements. Most accounts at least have a POD designation. Regardless that is a totally different discussion.