I’m Connor, the android sent by Cyberlife.
She may be more acutely aware of her hearburn after drinking a bunch of water, but she is probably used to it the rest of the time. Just about anyone would have serious heartburn if they a large volume of food and then had like 40 lbs pressing down on their abdomen afterwards. Persistent heartburn might be a reason why her teeth disintegrated so fast, its not uncommon for the acid to get into the mouth, especially during sleep.
the acid reflux probably doesn’t help at all. bulimics can a great example of what can happen when acid washes the teeth on a regular basis. many lose their teeth entirely.
although i’m pretty amazed that she has most of her teeth in the first place. she eats a high sugar diet (a pint of ben and jerrys has about 95+ grams of sugar and she eats one of those nightly, plus a gigantic chocolate bar and, no doubt, another plethora of mixed sweet snacks, so her teeth are taking some pretty substantial damage there.) she has shown in the past to neglect even the most basic forms of self-care, like taking off her make-up before bed, combing her hair, washing her face - or washing anything, in fact - and she has a weird, inconsistent sleep schedule so it’s not unreasonable to believe that she frequently neglects to brush her teeth, since the habit is usually formed around sleep schedules. it’s also a behavior that requires standing for 2+ minutes just to get the brushing done properly, so using floss/waterpik and mouthwash are also probably out of the equation, even if she manages to find the energy to brush. and lastly, she doesn’t take care of her health at all. i doubt she gets cleanings every six months or takes care of her cavities. combine these factors with a nutritionally defunct diet lacking in calcium, protein, etc. with an excess of soft drinks...
it may not have happened yet, but she will be lucky if she makes it to 35 with most of her teeth. she will be lucky to make it to 35 at all, but if some kiwis are right and she’s going to be one of those deathfats that cling around till 45-50, tooth loss, tooth rot, jaw infections, etc. will be one of the first signs of her body shutting down entirely.