IPhone pictures were accidentally deleted from laptop after they were synced?

Well, my younger sister wanted to download some songs from our laptop and then put them on my mother's iPhone 4S iOS 7. I don't know what the heck she did, but all of my mother's pictures got deleted from her phone and then they were put in a file on the laptop. Unfortunately, my sister panicked and then deleted all the pictures from the laptop. How do I put them back on my mother's phone? This was the irst time that it had been connected to a laptop (new phone) so the syncing was automatic and the phone had not been backed up! There's nothing in the recycle bin!

Check your mother's iCloud to see if the photos have been backed up in there. If they aren't there then I'm sadly not sure what else to tell you

Are they in the recycle bin? If not try Recuva.