Tenant claims there is no heat, and it's Christmas

[Natalia Perlova]

Hi there BP community, looking for your advice on the following please: i inherited a section 8 tenant who pays way below market, acts shady, had an issue with the leaky toilet for years, which damaged the floor and cost me $$$ to fix. She now says her heat is not working all of a sudden. A contractor was there that day to fix the floor, and said there was not problem with the heat. She denies and keeps texting me every day to "fix the furnace". With now being a weekend, and going on Christmas week, what would you suggest i do? I had a plumber inspect the furnace a couple of months ago and said it was in good shape. Thank you for your wisdom!

P.S. I am serving her a notice to vacate at the end of her lease in feb.