And then, she makes sure to point out she uses Sensodyne toothpaste, ...”
To me it meant that she was old enough to have suffered peridontal disease with bone loss and receding gums.
Or weak gums from failing to brush her teeth on a regular basis.
She’s 45. I’m 45 and have nothing less than perfect healthy teeth and gums. She was or is probably a heavy drug abuser to have deteriorated teeth and gums at her age. Or she just has poor dental/general hygiene as I previously mentioned. Likely all of the above.