Can I see the photos of my camera again without memory card?

Per QRK. put some batteries in it to check for pics stored in the internal RAM. 

The L25 has 20MB of internal memory. That's enough memory for around 5 to 10 images.

no are you stupid or just mental

You need the memory card to see any of the images that are stored on it. 

Some cameras have a SMALL internal memory 

that will store maybe 12 to 50 images; 

others have none at all.   

No, the memory card is the only thing that stored the pictures; where it goes, so do the photos.  It's like asking if you take a roll of exposed film out of a film camera, is there was a way to put a new roll in the camera and get the photos back that were on the old roll that was thrown out.  Obviously, the answer is no, sorry.

Instead of the camera, I would look on your gran's computer or facebook account.  The memory card in these cameras were not intended to be used for long-term storage of data.  It's far, far more likely that the images are on some other device like a laptop or desktop computer.

By the way, for clarity, the camera isn't a Nixon, it's a Nikon. 

i would ask your grandmother about it

If the original camera used an SD card as it's memory, then ONLY finding that exact SD card would get you access to the pictures on it.

Cameras tend not to have built in memory, which is WHY you use an SD card.