In my headcannon, Fizzlepop Berrytwist makes more appearances. When she hears about Twylight’s sins including the Marer Do Well and Walking Dead as well as her trial, her reaction be compassion as Twylight did for her and goes fleet and her. She comforts her and defence her, and helps her redeem herself. And begs the War Doctor to spare her only to find the old one only sought to help her and to defend her from Rassilon’s Time Lord forces as well as Davros and his Daleks who exploit the mistrust of many for their Time War.
Also in my headcannon, she bonds with the others. The CMC accept her. Cadence accepts her and let’s her babysit Flurry who enjoys her. And Fizzy gets cross with a Klingon for being a jerk especially mocking Rainbow and Fluttershy for being gentle as well as Twylight, and finally clobber him for mocking Flurry and threatening to send her to a freakshow.
Also in my headcannon, she is the first to go to Scotland, and meet Merida and her family from Brave. And also meets the Tarzan, Ice Age, Brother Bear, Lion King, Jungle Book, Beauty and the Beast, Frozen, Alice in Wonderland, Lilo and Stitch, Snow White, Moana, Raya and the Last Dragon, Aladdin, Molan, Dumbo, Bambi, Wish, and omore.
Also in my headcannon, she meets the EG ones and helps a human counterpart.
Also in my headcannon, she was alone because of Opaline but spirits transport her through time to MaretimeBay where she joins the Gen 5 ones as an aunt figure. And when Gen 4 returns, she reacts in joy; especially to Twylight. And she helps the two groups and Megan William vs Grogar.

Awwwwww. Heartwarming.