How is a way I can explain to my mother what imprinting is?

A werewolf (or shapshifter) will imprint on the person who is most likely to carry on the werewolf gene and produce the best offspring. Imprinting can only occur once the 狼, オオカミ gene has triggered and they start phasing. They will imprint once they set eyes on the imprintee and that person will be the most important person in their whole world and they will be whatever their imprintee needs (a brother a friend a best friend and finally a lover) and they will do anything for them.
This idea is very similar to that of some animals, such as baby ducklings- in psychobiology imprinting is a form of learning in which a young animal fixes its attention on the first object it has visual, auditory または tactile experience. This is similar as the 狼, オオカミ would be the young animal (they are young werewolfs, not young humans) and the imprint occurs when they fix their attention on another through a visual experience

愛 at first sight

あなた can tell her it's like あなた meet your soulmate, only deeper. And to read the books.

ISN'T IT SO CUTE???

well i think the best explaination part is in Breaking Dawn. The feeling Jake gets when he fisrt saw Nessie. sorry the book is not with me so I can't say what the quote was.

あなた could say, it's 愛 at first sight but stronger.
It's finding your true 愛 with one look.
あなた find your true 愛 and nothing else matters, only her, and her alone (or he) あなた feel as though it is only あなた and her(him) alone in the World.

愛 at first sight
When あなた look at someone and あなた know あなた want that person forever
When あなた know あなた belong to someone and that someone belongs to you

tell her it is when they see the person they trly luv n cnt leeve becuz they have imprinted!!!!!!!!!

Okay. Short, sweet and to the point.
When a werewolf imprints, it's like gravity isn't holding them to the Earth, they are.
And imprinting is seeing the person you're going to spend the rest of your life with and being their protector/best friend untill they are truly together.