I wrote to our Regional teachers and they have advised in this tradition the most wholesome way to share merits with and pay respect to someone who has died is to meditate and then practice metta. Goenkaji advises against playing any extra chanting in the sitting, or anything else taking place apart from meditation and people practising metta by themselves at the conclusion of the sitting.
Goenkaji cautions against other activities as, over time, such activities will become the focus and initiate Vipassana religious rituals.
That's very sound advice, I must say. Particularly when I think of how monks and their chantings in East Asia have become part of pagan funeral rites and rituals. Thank you all for your advice.
All beings like yourself are responsible for their own actions. Suffering or happiness is created through one's relationship to experience, not by experience itself. Although I wish only the best for you, I know that your happiness or unhappiness depends on your actions, not on my wishes for you.
May you not be caught in reactivity.