She is the heir to a massive secret hitman organisation, maybe even a spy organisation as well, which she ran away from.
She was expected to be bounty hunter which she was never good at, probably isolating her from everyone. As time went on, either the people got sick of this, Zam got caught trying to escape or she did a massive mistake that made the Stellas imprisoned her to not let her leave.
The reason why I think she was the heir is because of the fact that Prince was a ‘rough’ translation to what she was called in Mars.
The hitman thing came from her refusing to learn bounty hunting at the academy and also her hating it when her blood-thirst or combat was levelled up.
The fact that I think that it was a secret organisation and could even be a spy organisation is when Zam said that the Stellas were known as working class who were typically used for mining and ‘in lower standing than the Martians’, so therefore weak which contradicts the point of the organisation. And also how Zam said that she is only faintly glowing, as it wouldnt make sense for her backstory which I think means that the glowiness would disrupt her ability of stealth, which she definitely has a skill in shown in the hide and seek matches.
Perhaps the mysterious organisation was actually one standing against the injustice of the Martians being at the top. Maybe thats the reason why they were so desperate to make her a bounty hunter and we’re so angry about her not wanting to, because she was a figurehead and it would ruin their fragile internal and external reputation that they worked hard to create.
Perhaps the mysterious organisation was more of a mafia family and ruled over the other Stellas in a violent matter. Maybe Zam saw this and it was the reason why she ran away.
On a side note , I wonder if there is a biological reason for the Stellas are so good at mining. Zam had easily became an incredibly good miner without any training (at least recently). Also, her fast adaptation to Earth’s ores is also interesting to think about. Her hesitation to becoming good at mining at first could stem from how mining is all her species have been thought as.
However, it could also be that she was taught by someone that might’ve trusted, which could also be the reason for her hesitation at the start.
On the matter of biology, her being out of pink gloop and stars is interesting. No notes.
I might’ve forgotten somethings or her recent streams have disproven my theories already because I haven’t seen the last few streams.