Do snakes have strokes? As far as I know colubrids don't get IBD which is what I'd immediately jump to if it was a boid of any sort.

Is she losing muscle tone as well? I've seen geriatric snakes a time or two and they always seemed to lost muscle tone and been relatively weak (these were mostly colubrids in their 20s).
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We wouldn't have 6 and a half billion people if you had to be beautiful to get laid.