A woman co-owned a flat with her late husband, and now holds 100% ownership. She wishes to leave 50% of her property to her adopted son and 50% to her live-in male friend via a registered Will, appointing the friend as executor. While an adopted son is generally a legal heir, a live-in partner is not automatically considered one. The validity of the adoption and the clarity of the son's legal documentation (using biological parents' details) are key factors. The property owner can indeed bequeath her property to anyone in her Will, regardless of their legal relationship.