The Register of Deaths, online, indicates she died in Summers Co., WV on Apr. 1, 1892. Her death certificate might have the cemetery location. You would have to write to the state or visit the capital for that information. If it does not have the cemetery the local morticians may still have the records as to grave location.
Are you a descendent?
If so and you are willing to swap information I am willing to trade you your ancestral line back to Robert and Mary Lilly for what you know on your descendent line from Wilson and Eliza down.
Hope to hear from you soon,
Cousin ? Bob
Can You Trace Your Line To Robert Lilly ? Yes, 5 or 6 ways