Perhaps it's about Bella's transformation. Alice may have her own ideas about when and how Bella should be turned into a vampire. Bella, on the other hand, has her own desires and fears regarding the transformation. Their disagreements on this crucial aspect of Bella's life in the vampire world could result in a fight.
One possible reason could be a difference in their views on how to protect the Cullen family. Alice might be more focused on using her visions to predict threats and take preemptive actions, while Jasper, with his military background, could prefer a more direct and combative approach. This divergence in strategies might lead to a fight between them.
Perhaps it's related to their different views on the Dark Lord. Lucius is a more committed follower, while Draco may have doubts or be less eager to be involved in the dark deeds. Their conflicting loyalties could cause a rift and ultimately lead to a fight in the fanfiction.
Alice would be the likely winner. She is fast, agile, and has had time to hone her fighting skills over the years. Bella, even if she has some natural strength as a vampire, is still relatively new to the vampire world and would lack the experience and finesse that Alice has. So in a straight - up physical fight, Alice would come out on top.
It could be that Alice accidentally touches Bella's hand during a class activity, which leads to a moment of shared confusion and then perhaps a new friendship starts to form as they exchange glances and small smiles.
One possible plot could be that Alice Rose discovers Bella's pregnancy and becomes her support system. She helps Bella through the various challenges of pregnancy like dealing with morning sickness, preparing for the baby's arrival, and choosing baby names. Alice might use her special abilities (if from a universe where she has such) to foresee any potential problems during the pregnancy or birth.
Well, it could be that Bella and Alice are on a mission to learn some secrets from the Volturi. They might be disguised or using their unique abilities to get close to the Volturi leaders. It could also involve some tense moments of almost being discovered and having to use their wits to escape tricky situations.
One possible reason could be a misunderstanding. Maybe Sonic accidentally broke something of Tails' while on a high - speed chase. Tails, being a bit sensitive about his inventions, might get angry and start a fight.
In the fanfiction, it could be that they fight due to differences in their beliefs or values. Bella, with her human - turned - vampire mindset, might have different ideas about how to deal with certain supernatural situations compared to Paul, a werewolf. Their clashing views could result in a physical or verbal fight as they both try to impose their own ways of handling things.
It could be a vampire - related illness, like some reaction to a new type of venom.
One possible reason could be their shared interest in Ron. Hermione has a long - standing friendship with Ron that might have developed into deeper feelings on her part. Lavender, on the other hand, is attracted to Ron and is more openly affectionate. This competition for Ron's attention could lead to a fight between them in the fanfiction.