I'm not.
Sel is a weeb, he knows Japanese culture, and cites Persona as a major influence on the game. Thus, he knows the cultural context of Haru's story -- the heiress with no brothers will not inherit the company or the family fortune, her husband will, and the husband will be chosen based on business acumen, not compatibility with the daughter.
Her eventual husband will be Mukoyoshi, and in Japan, it's common practice in family-owned businesses when there is no male heir.
The only difference between Haru and Touka's situation is that Touka hasn't met her eventual husband yet, so she still has a chance that it will be a decent person and not a violent abuser like Haru got paired with.
Daughters of wealthy Japanese families are commodities who are granted very little agency in their lives. We see this more in Tsukasa's story (who's painfully aware that she's The Spare and will only be truly valued at all if her sister dies before marriage), but it's still present in Touka's story. She's just managing it better than her sister (so far).