Lost iPhone in Stephen's Green - lots of sentimental pictures.

My sister-in-law lost her phone while at the playground with her two beautiful daughters, (2.5yrs and 10months). It's an iPhone 4 with a red/wine rubber cover. She didn't mind losing the phone as it's insured, however unfortunately her phone wasn't backed up so she has now lost 1,000s of pictures including many of her daughter when she was just born. Would be so wonderful to get it back... purely for the irreplaceable pictures/memories.