Honestly I'm unsure as to what is the origin of why Honeyleaf would be evil. But I just decided to try and make an alternative version of her I suppose.

нoneyleaғ:aн, nιgнтpaw. нow lovely ιт ιѕ тo ѕee yoυ вroтнer.

𝙽𝚒𝚐𝚑𝚝𝚙𝚊𝚠:𝚈𝚘𝚞'𝚛𝚎...𝚢𝚘𝚞'𝚛𝚎 𝚗𝚘𝚝 𝚖𝚢 𝚜𝚒𝚜𝚝𝚎𝚛...

ʜᴏɴᴇʏʟᴇᴀғ:ᴡʜᴀᴛ ᴀ sʜᴀᴍᴇ ɪᴛ ɪs ᴛʜᴇɴ. ɪ ʀᴇᴀʟʟʏ ᴡᴀɴᴛᴇᴅ ᴛᴏ ʟᴇᴛ ʏᴏᴜ ʟɪᴠᴇ, ʟɪᴛᴛʟᴇ ʙʀᴏᴛʜᴇʀ.

(Honeyleaf is in the front, Echo is on the left, and Eagle is on the right. Yes I know I know he looks similar somewhat to Tigerstar xp. Below them in the middle is Nightpaw who went to see his sister after her change to evil to convince her to come back. She, however, after whatever it is that she went through has learn to adapt to Echo's and Eagle's wicked ways and lifestyle. From optimistic, kind, and loving to sadistic, manipulative, and cold. I'm thinking she might of given into her deep thoughts that she suppressed from trying to be joyful and positive all the time. Either that or experienced something that caused her major trauma. When seeing the death of Grovestar(who I'm pretty sure is dead lol?) it triggered her to lose a little hope and positivity. So I'm guessing if something else happens like that it would finally make her snap.)

https://www.youtube.com/watch?v=nNbZJ-IgAEg

Song that inspired this: Can You Feel My Heart by Bring Me the Horizon

The part in the song where it says:

I'm sorry,brothers:Deep down the good side of Honeyleaf is apologizing for leaving Nightpaw, Crowpaw/Thrushpaw(adoptive brothers I believe)behind

So sorry, lover:Her apologizing to
Sparrowrunner or whomever it is that she loves for betraying them

Forgive me,father:Her apologizing to her deceased father but mainly her adoptive father Robintuft for giving up(but he's a supportive bean nonetheless and still loves her like his own 🥺)

I love you, mother:Her saying that she loves her deceased mother before she turned to the other side, she also said 'I love you, dearest mother' to her mother before doing a dangerous act when she was alive.

Different part of the song-

I can't drown my demons, they know how to swim:She can't rid herself of her negative and malicious thoughts that plague her mind because they're always there, no matter how hard she tries to suppress them.