Dorothy is idealistic and this idealism is dangerous. Her objective is the same as Sesa and his brother: eliminate entry barrier and differences in Arts abilities. Except that by now Sesa is more pragmatic, so he is against doing so at RI. Perhaps he had realised the impact of everyone using guns/Arts as per Archives 4.

The ironic thing is that this idea is good in theory. Just not so good in reality and execution because people will use technology for evil. And then Rhine Lab might want to use their tech for war.

Dorothy may be responsible for the lab accident because Archives 4 mentions someone in charge that rose after the accident and cannot be traced. In WD, Sesa even says this person stepped on top of his brother's corpse.

My hopes for Dorothy and her section is to be actually be related to Sesa's Columbian military lab plot. It's been 2+ years and HG only gives crumbs for Sesa lore. None for MB, crumbs for WD ;;;;

Not sure if I want her to be good or evil. If evil, might just want to get rid of Sargonian competitors. Especially when people are racist against Sargonians. If good but misguided, perhaps Silence and Saria (maybe Sesa??) could get her to RI's side.

Otherwise Dorothy's design is cute. Same name as the protagonist of the Wizard of Oz, so I wonder if we'll get references because it's an American fairy tale.

I've actually translated this analysis of Sesa's lore and Rhine Labs Originium Arts section. You can check it out: https://twitter.com/nanahoshiren/status/1518933673260634113?s=20&t=hFrXv02PYp8qd4u9axIufw