My camera fixed itself? (kinda long)?

Ok so i accidentally dropped my nikon s3100 on my bathroom floor
heres what happened: it was in my pocket and i was straightening my hair
well my cat walked in and kept rubbing against my legs and at one point, she somehow half tripped me
the camera fell out onto the floor and then refused to turn on or off, take pictures, go to my pictures, anything like that and the lens was also screwed up
well i showed it to my mom and she was playing around with it
she took the battery out and it finally shut off, then put it back in, and turned it on
the lens fixed itself and it let me go to my images and take pictures again
does anyone know how this happened? Of course, i'm grateful it did, but i'm just confused on how the camera did it
so if anyone can help me, thatd be great: D

You are just lucky

Watch for any problems in colour shift, focus or grinding noises when using the zoom feature