@tal-sabadia, there is a way to get a simple "failed" or "succeeded" voice response for a long script run or a script that you trigger manually.

1: It requires creating two TRIGGER.cmd dummy scripts (dummy1 & dummy2) that simply echo "OK" when ran from command line. 2: At the end of the backup script have them triggered (using the tcmd tool found here https://www.triggercmd.com/forum/topic/196/tcmd-go-command-line-tool-is-available-now) based 1 on a fail and other on a succeed result. 3: In Alexa routines create two, one for dummy1 that Alexa says something like, "Trigger C M D reports script succeeded"
The other for dummy2 that Alexa says something like, "Trigger C M D reports script failed"

This way you can use the same routines and dummy scripts for several different long running scripts and even for scripts that aren't started by TRIGGERcmd