Erased Photos Digital Camera

New on this forum, and was seeing if you guys could help me out. My brother and his girlfriend are visiting me in New York, they took lots of pictures... To make a long story short, somehow her pictures were erased from her camera. Curious if there is anyway to retrieve them back. The model is Casio Exilim ex-z700. Thankyou for your help!

If you have a card reader, or can connect the camera to the pc you could try using 'PC inspector file recovery' this software is capable of recovering deleted files, or files lost during a 'quick' format. I have used it succesfuly to restore deletd files on my phone's memory card, and also on my camera memory card. Not sure where you can get hold of the software, but if you search the net you should find it or something similar.
It's not guaranteed to work, but you have nothing to lose. if it doesn't work, you could always try other software.