How mummy lost the HP?

She left the toilet without the HP. The toilet's Auntie mistaken it to be another person's HP, she handed over to her. AND that girl just took it! How can she do such a thing!

Mummy did tried to call but the phone is switched off. OFF means GONE

Now the girl is nowhere to be found. She belongs to the same company's staff.
Too bad, there are simply too many staffs from the office. Not easy to track her.

There goes mummy's phone and most important are those precious photo memories that are stored in the phone.