What obstacles phoenix Jackson must face in a worn path?

Phoenix Jackson faces various obstacles in "A Worn Path" by Eudora Welty, including physical challenges like the long journey through the woods, her frail body, and encountering a wild dog. She also encounters racism from a white hunter who threatens her, as well as her own forgetfulness and confusion due to old age. Despite these obstacles, Phoenix perseveres in her mission to obtain medicine for her grandson.