I'm sorry for your loss.

The of dash was sent in a lot of addresses but the last tx in chain of 8,147.263 Dash  are in this address
https://chainz.cryptoid.info/dash/address.dws?Xus9DmMmcL5K6N2vQwuB7fHZms2XhAVvEC.htm

I will search for all coins later.  Maybe someone can contact exchange to ask if this address belongs to an exchange