(December 12, 2023, 6:51 PM EST) -- PHOENIX — The Arizona Supreme Court on Dec. 11 affirmed a trial court’s grant of summary judgment for a beneficiary in a suit filed by a decedent’s niece claiming undue influence related to a deed leaving properties to the beneficiary, finding that the appellate court erred when reversing the trial court decision and determining that an issue of fact remained as to whether the beneficiary exercised undue influence over the decedent....