I don't think Dandeer has any kind of argument, though. I mean, if she tells him that it's suspicious that his daughter is interacting with her son, who is enrolled in her school, I doubt he's going to do anything but laugh (good-naturely, not mockingly, of course).
She doesn't need an argument. She need only lie convincingly.
Also, I know that I already responded to this, but we could probably preempt any suspicions from Berra (and hopefully Dandeer as well) by asking Berra if he knew Jaron was going to be enrolled in our school, if Dandeer told him anything about it and by asking him (Berra) to ask Dandeer about it. That way, Berra will likely be the one to bring it up to Dandeer, which will limit her ability to frame it as something suspicious, and hopefully limit the chance she sees it as suspicious as well.
You seem to be fundamentally misunderstanding the problem. She doesn't need to walk in and make a convincing argument breaking down her train of logic. She only has to come sufficiently distressed that Berra considers humoring her. A quick, "just to put your mind at ease, I'll talk to her." Or she must push much the same buttons as she did last time.
To be honest, the order doesn't really matter much to me, I want to learn all the styles for several reasons.
Fourthly: Being able to say we've learned and mastered every known style of fighting is just damn cool.
I hope you both are advocating making it a future, far-off goal rather than an immediate one. Yeah, mastering different styles can cover holes in their form, but:
- It has us focusing multiple actions on something Kakara has trouble with, that actively stresses her out.
- It completely neglects the possible ki techniques we could incorporate into the style. In the same way that Goku style focuses of IT, Kamehameha, and Solar Flare, Kakara's should use whatever neat tricks she comes up with.
- We have so much currently going on, that any action spent this way has to be weighed against the other options.
To expand a bit on the second point, there are a lot of ki techniques we could invent that would work well with a pacifist, or non-violent style to make it effective. Ki absorption, Ki healing, Ki chains, Energy Field, Ki disruption field, Multiform, Afterimages, or whatever else Kakara can come up with. The sky's the limit and this is where she excels. That's not counting the things outside of Ki techniques that would be useful such as a stronger Seer proficiency and ki blocking.
I'm fine with a pacifist style so long as it is either brutally effective or she has a sufficiently trained backup style that is more lethal. Though I would argue against over-committing to this. It's not something we'll need immediately, so we should take it slow. Holding off on creating a new style until we have some new techniques, a good foundation in other styles, and Saiyan society isn't about to erupt in civil war seems like our best bet.