I don't know of any such chants, but a recital of the following sutta may be beneficial in terms of highlighting:
- Inevitability and uncertain timing of death
- The benefits of equanimity in response to feelings associated with the death
- The way the event can be used as impetus to strive onSnp 3.8: Salla Suttahttp://www.accesstoinsight.org/tipitaka ... .irel.html
It's quite short, so shouldn't eat into the session too much... but as Ben says, contacting VRI is a good idea - this won't be the first time such a thing has happened, and there may well be a standard process in place.
"Do not force others, including children, by any means whatsoever, to adopt your views, whether by authority, threat, money, propaganda, or even education." - Ven. Thich Nhat Hanh
"The uprooting of identity is seen by the noble ones as pleasurable; but this contradicts what the whole world sees." (Snp 3.12)
"To argue with a person who has renounced the use of reason is like administering medicine to the dead" - Thomas Paine