An 85-year-old woman named Harriet, passes away. Her will,executed 1 year prior to her death, directs that her entire estateshould pass to the home-health care worker who assisted her thelast two years of her life. Harriet's two sons were verydisappointed that they were excluded from the will. Is this a caseof undue influence, such that the sons could successfully contestthe will and receive the estate's assets? Please provide detainedexplain detailed explanation.