The box witch with a covetous nature. She is a staunchly reclusive witch. Anything she covets she locks away within glass. The thoughts of her prisoners are laid bare, but one can strike her without thought without problems.
- She seems to be holding her head as if she's in despair.
- Elly's Grief seed was not shown directly after the fight in episode four on almost all broadcasts and streamings. But in the same scene on delayed AT-X broadcast at 23 April, her grief seed was added in film. It may be BD/DVD version.
- The seed that Sayaka uses in episode six was probably Elly's. Also, chapter four of the manga clearly shows her dropping a seed although the design details are different, like all of the grief seeds in the manga version.
- A picture of a girl in a magical girl-like attire appears in one of Elly's television screens; this is speculated to be her form as a magical girl. At the very end of the series, a motif shot of silhouettes of several magical girls appear; the silhouette of this girl is seen among them, giving credence to this theory.
- It may also be the actual witch, hidden (literally) behind a computer screen which would fit in with her reclusive description and the next point:
- Pausing as the monitor smashes open on the ground will reveal Kirsten's body. (That shadow amongst the blood.)
- Elly said "I really had fun today, I want to do it again. Next time, I'll bring a bentou" (今日は本当に楽しかったねえ、また行きたいね。今度はお弁当持って行こう) in reverse speech right before Madoka entered her barrier.
- Elly also has the 'look at me' message in her labyrinth.
- Elly was the name of Dorothy in the alternate retelling of Wizard of Oz
- The H.N. in Elly's name can stand for Handle Name, a term for nick name in Japan. This would mean her true name is Kirsten, while she referred to herself as Elly as her other identity on the internet, or maybe while she was still a magic girl.
- Elly's name may be a reference to the character Eri Mizutani from THE IDOLM@STER Dearly Stars. Eri was a hikkikomori internet idol that went by the name ELLIE.
- The Guidebook indicates Elly's labyrinth design as a Snowglobe （スノードーム）. It has the line, "I have only one wish. Box up that memory." （私の願いはただひとつ、あの思い出をとじこめて）. It states that when the Witch dies, the lights on the Christmas tree and merry-go-round short out. There's a 'basssh!' sound.
- In modern film and literature, snow globes often symbolize childhood, innocence or so-called "happy days". However, they are also sometimes used, with dark humor, to evoke more gruesome scenes.
- In accordance with her wish to box up a memory, Elly examines Madoka's memories and captures them in her monitors. The screens show images of Mami and her death.
- Another interpretation of "boxing up a memory" could be that she had a happy memory that she wanted to keep safe.
- There is a character in the animation "Gregory Horror Show" called TV-Fish, which looks similar to Elly, and also projects memories.
- It appears Elly may have been obsessed with the Internet, and may have been an internet idol due to handle names being commonly used as usernames in Japan.
- One could say she was stalked which may have made her fall into despair, due to all the T.V Screens.
- The name Ellie - as from Elly - means 'beautiful woman' so this may further prove someone was idolising Elly because of her beauty.
Elly's Grief Seed from Puella Magi Madoka Magica Portable