She is overweight by 8.kg.
Fatty
liver is one of the indicators of Overweight. Weight reduction will help her to resolve this issue.
Gallbladder is having Stones & Polyp.
If she has symptoms due to stones, then gall bladder surgery is the best option for her. Otherwise can weight.
Get USG after every 6 month to see size of polyp ( not the stones), if it become more than 10 mm, then it should be removed, else it may turn into cancer. Till than you can be assured.