My mom left everything in her will to a neighbor I’ve never met

Location: WV. So my mother left everything in her will to her neighbor that I’ve never met. For the past 4-5 years every time she brought up death and a will she always said to me and everyone else that I’ll get everything. She passed away September 1st and I’ve seen the will and she only left me 2 cars which I do not care about getting anything, I just wanted the house to stay in the family in case someone needed somewhere to turn to in times of need and it was my grandfather’s house. Me and her talked several times a week for the past 6-7 years and told each other everything since I moved out of state. She does have a history of pill abuse and has been on some several prescription drugs like gabapentin for many years and I’m afraid her mental state wasn’t right and haven’t been right for the past 4 years as she has constantly forgotten my birthday and asks the same questions multiple times in one phone call and never remembers things along with other things. I believe her to have the mental capacity of a middle schooler because of her speech and word choice for the past 4 years which she didn’t use to be like before then and has always stumbles and seemed to be drowsy every time we talked the past 4 years and worried that she was manipulated by these people and taken advantage of. Her partner who has taken care of her for the past 11 years was left out of the will even though he has been the one to pay her bills and cook and clean for her and everything literally everything. I’ve only heard about this neighbor from her maybe 3 times since I’ve moved away and she’s only known them for a year or two or less. Do I have any options?