But when to these factors is added some other such as great age, weakness of mind, sickness or other incapacity, the presumption arises, and the burden is on the other party to show that no oppression took place. (Ibid., italics in original; see also Tyler v. Children's Home Society (1994) 29 Cal.App.4th 511, 550 [35 Cal.Rptr.2d 291].) fn. 11 In the Dawley case, we found substantial evidence to s