Have Alexa make an announcement to alert you if iRobot is stuck and requires assistance. You will need to also set up a Voice Monkey to work in conjunction with this applet, as well as an Alexa routine that the Monkey will activate that has Alexa make the announcement of your choosing, when then Monkey is pressed.
Then
Trigger Monkey (Routine)
This action will trigger the Monkey you specify including any parameters you set. Use it to trigger Alexa routines!
Explore more great ways to automate Alexa Voice Monkey and iRobot