The last star by Rick Yancey

I think it's going to be about a girl on a mission to save something because on the cover she is on a cliff over seeing a airport or just city streets. I read 10 min and I got to page 86-87 and I like it my prediction was sort of right it's a guy named Ben  to save a friend named dumbo from a fatal gun shot wound. He  goes across the land eventually landing in a house which it's not disclosed where it is but he  goes in a finds a woman that's in her 60 to 80 in between their and so Ben  to interagate the woman and get info. He finds out that she hasent seen anyone in months food ran out a month ago eventually finding that she's been eating her own cats to stay alive. Well they start fighting but that's where I left off that's a quick summery of the last star by Rick Yancey.