She had been around for around a year when that happened. The 'first day' story linked by Reddit was someone else. It was her first time modifying an index on ES, however. I include the scrum master and PO to be complicit, as resources were tight and they still pushed for the work to be completed. This one bit us hard. The team was broken up and moved on. She was the only one I personally asked to have as a direct report.