On older Dell Latitudes (D-series, E6400), there was a dedicated 2-pin jumper labeled PSWD or Password . Shorting it would clear the BIOS password on boot. (Latitude 5480, 5490, 5590, 7xxx series), there is no PSWD jumper . Dell removed physical password jumpers around 2014. Instead, they use a crypto-processor.
If official support is unavailable, tech-savvy users often resort to hardware-level intervention. This suffix is stored in a non-volatile 32MB BIOS chip that does not lose data even when power is removed.
This time when the BIOS asked for a password, she knew where to find it.