"Gamp's Law of Elemental Transfiguration, now you get it?... no? okay here it goes:
I decided I want to be human, a human daughter to Irma", explained Enid.
"Everything fits now isn't it? How I was born under a chair, my friendship with Nissi. Well the story doesn't ends here.
We read the entire book about 150 times; actually, we read every book about Gamp's Law of Elemental Transfiguration. And then, after 10 months of collecting information and rare ingredients (which part of them were my whisker, a gnome's-ear hair-and, couldn't you guess? A glass of milk) we had crafted the potion that will turn, for the first time in history - an animal into a human.
Irma and I kept the whole thing secretive; After all, we were trying to get past one of Gamp's laws. But Albus knew, somehow, he knew.
Finally, after hard work, I drank the potion and became a 3 years old girl, After all, the potion hadn't changed my age.
Since the potion worked we thought we should share our breakthrough with the world but Albus warned us, he said that dark wizards will use this breakthrough against us and will use this to turn the animals into dark wizards.
So, I've been a witch ever since, I'm a witch as any other girl who came into your shop. The only exception is that I need to drink milk every 3 hours, or I will start to purr uncontrollably".
"Is everything clear now?" asked Anid.
There was a long, long , long silence, and then, "Wait a second miss. There is something that's not clear. If Dumbledore told you not to tell anyone your secret, how come have you told me?
"Sir, what animal do you think I was before I drank that potion?",asked Enid.
"A cat of course" answered Mr. Ollivander.
"Why would you think that?".
"Well, you were friends with Nissi, I mean, Mrs Norris, who is a cat. You love milk; you were born under a chair. What else could you be?
"You were close. I may look like a cat but then, how could you explain my magical powers?
The potion only turn me into a human form, it didn't give me any powers or abilities (except talking, and walking on two, of course)".
"Well then?", teased Enid.
"No idea", admitted Ollivander.
"I was a kneazel." She said, like it was as normal as talking about quidditch.
"In Merilyn (Monroe's) beard!" shouted Ollivander. "But you are so polite! And aren't kneazles supposed to be very aggressive?"
"Well, I guess even among kneazles I was a bit different", said Enid and added a smile.
"Okay ,okay. You were a kneazle, okay. But what's it have to do with me? Because you are a kneazle that's mean I'm trustworthy?"
"Oh no sir. but my second cousin told me I can trust you. He told me how brave you were in the second wizarding war. His name is Crookshanks.