As you grieve, let there be compassion, first for yourself. Later, send compassion to others who were impacted by your loss. And then, when you feel your strength return, remember that everyone will have this experience, and let this realization fill your heart with an abundance of compassion so that it cannot be contained. Your best response is to send that compassion out to all beings.

If, with a mind free from hate,
one arouses love toward just one being,
one thereby becomes good.
Compassionate in mind toward all beings,
the noble one generates abundant merit. (AN 8.1)