Hypothesis

Must be from mothers side then, but she we a deadbeat, no?

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I've read that her Mother didn't have magic, she did an experience when she was pregnant and it ended with her (mc) being talented in magic ( the mother wanted to be the one who's talented so she went back to the group of rebellious or something like that ) her father went after her mother and got his appearance changed
I don't really remember alot but that's what I had in mind.
I apologize for any missed up or bad spelling, english isn't my first language

So, she’s still a deadbeat I’m more confused cause it seems in last chapters it was her dad that we saw as like light-brownish hair. He seems to have met with the MC already and work with her? Why didn’t he show himself to her if that’s the case?

Her dad went missing a long time ago, it was at the time he got mc adopted by her uncle (dad's older brother) we saw him a bit earlier, he wanted to marry mc to that pig headed merchant
Maybe you confused her uncle with her real dad?

No? Yes, her dad left, but wasn’t he shown in recent chapters? Changed appearance, going around town, blue eyes, same face and short brownish hair. He also met her at her job