Lease end date help to clarify please

[Linda Thomas]

Hello all,

I have a long term tenant for over 8 years and I no longer want her in the property- every month she is late on the rent. I have always tried to work with her when I should have not been so lenient. Lately it has gotten worse and worse like for example for Sept she hasn't paid anything yet and plans on paying half tomorrow and the other half on the 28th with the late fees. My question is this. The lease she signed when she moved in 2014 ended on December 15, 2015. I did not raise her rent for 7 years so I did not send any renewals or vacate notices (I know now bad on my part!!!! ) last year around this time I sent her a renewal or vacate with an increase of $65 (rent is still way under market rates I know don't yell at me lol) she signed and agreed to renew for another year with the increase so we did that. My question is I just noticed that I MESSED up and put the renewal letter she signed and agreed to with an expiration date of Nov 30, 2022 instead of Dec 15, 2022? since her original lease she signed when she moved in was for Dec 15? is that okay? should I be concerned about this now? would it stand up in court and which date would I use? Hope that makes sense?