For example, a women may have an ex-husband with whom she raised children. How does she feel about that ex-husband being present in her hospital room? What if he wants to be their for emotional support for their mutual children. How might her current husband feel? She should decide what she wants, and then put her wishes in her own writing. Should the scenario ever develop, the power of attorney can point to her note. The situation may still be difficult, but it will decrease perceptions that the power of attorney is "taking charge" of the situation.
Emotions run high. Tempers swell. Words are spoken with regret. Anticipate situations and do your best to diffuse them. That is the heart of estate planning.