Find and Change Resources in Alerts

We have a staff person (A) that retired and is being replaced by another staff person (B). I ran a report to tell me where she (A) was allocated as a resource in the various sheets, and was easily able to change those tasks to the new resource (B). However, I know that the retired person (A) also received alerts based on actions on various sheets. Is there a way to find out which sheets have alerts the retired person (A) was on so I can change those to staff person B?

Thanks,

Jennifer