I would 10000% not want to read that novel, goddamn rich this company pres that, then they want to add on tragedy too? Just kill of her sister to make a "cheap" grudge? Terrible.
And all these stories where MC goes back in time or otherworld or whatever and is 100% sure that a copy paste novel from their past lives will be a big hit even though "big hit" sellers are like 70% luck 20% marketing 10% writing (don't quote me on that).