So...I decided to put this scene between Ichabod and Zeb here as a means to set up future character development also Eartha is actually learning potion making but she is currently under the tutelage of an expert hence why she knew they needed three

As Marzipan cried about the fact if there wasn't enough potion for both of them than neither of them could take it, because they couldn't be one teenager and one eight-year old…

Jonathan asked how they got these two flowers, Donatello told them the story…

"One of the students of Leo's Martial Arts School...A Garter Snake...She...Tore a hole in the fabric of reality while in a trance...I don't know if she can repeat the process…"
The adults began discussing a possible trip to the Balkans...But Ichabod remembered a previous engagement, so he quickly kissed Marzipan on the cheek and quietly said "I'll be right back." And quietly snuck off across the meadows.

There he found who he was looking for, the Mutant Zebra Filly was standing there with her back turned to him, the cool breeze blowing the grass was similarly blowing through her mane...The TCRI Mutagen had made her mane pure black and flow down like a horse's mane unlike the typical 'mohawk' style of the zebra mane.

"Hey Zeb…" Ichabod said quietly

There was no answer

"I...Know it's hard for you to look at me like this...I apologize...I thought it would be fun, I didn't think for a moment it might be shocking for a child to see their parent figure in the form of a child…"
Zeb huffed and gave a flick of her tail as way of answer.

"But that's not all is it?" Ichabod sighed "...I now know that you...Feel left out...You saw Taylor became my favorite and you wanted to be the favorite, you remember how I took care of you when you were sick, how I held you to my bare chest during that time...Zeb...I want you to know I never intended to play favorites...I...Always wanted a child that I could coddle and hold tight while rocking and reading stories and only Taylor as the one bird, she was the one receptive to my style of parenting, while you and the other mammal cubs wanted rough and tumble play...As soon as a realized I had a favorite among you cubs, I felt terrified that if I had more than one biological child I would have a favorite as well...So I asked Marzipan to have only one child...And she said she would try, but Humanimals derived from liter baring animals are very likely to have twins and triplets!"
Ichabod rambling in his child-like voice, caused Zeb to come out of her funk and she turned around and looked at him sympathetically.

"Zeb…" Ichabod said "...I'm sorry! I'm going to try to do better to love all of you better!"
Zeb galloped over to Ichabod and hugged him,

"It's so strange…" Zeb said quietly "...Being as tall as you are now…"
"I know…" Ichabod chuckled "...It's quite an experience for me too!"
So just a scene to make you feel all warm and squishy