Saturn in the 8th house is considered good. Saturn is the planet for longevity and in the 8th house it will give long life. However Saturn also in the 8th house gives ailments because it is also the planet of disease. The mahadasha of Saturn and antardasha of Rahu is going on. You should take good care of her and she will be fine. She needs to avoid spicy diet. Eat on time and avoid roadside and unhealthy food.
Doing remedies of Saturn are strongly recommended.