Month-To-Month Tenant 30+ years and I don't want to renew

[Sean N.]

Been thinking about this scenario for more than a year but after listening to podcast #679 my 2/1 duplex is smack in the middle between 2 major hospitals and would be a perfect candidate for a MTR.  Tenant's month-to-month lease is due for review in February.  I don't want to renew but I know she's going to put up a huge fight and ask why after 30+ years am I making her move out.  I fear she's going to play the "I'm disabled, you can't get rid of me" card.  I really don't have a reason for not renewing other than I want to upgrade, update and do the medium term rental.  Do you think she will take me to court since I really don't have a reason for not renewing?