The Nico hate was always a bit overblown. She shit talked us once and people wanted her head. Even though we know she looks down on just about everyone equally, who's lower than Level 3. Some even blamed her for killing us when we went against HERO or when we peeked on her naked. Like, of course she's going to kill us there. She doesn't know us.
The Valravn thing I got because she does leave us hanging there but she long since made up for that with the Cole fight. Hell, even the Alice part she made up for. If she didn't halt Ella for that long, there's no telling what would've happened. She also saved us all before we got nuked into oblivion by Hex anyway. Which seemed to be Ella's plan. In fact, if Nico stayed outside of the breach, Ella would've likely kidnapped us. Before anyone mentions Deus, he likely concluded HERO would win because Nico stalled Ella out.
So yeah. Now that we reached Level 3, we can see the difference here. She's still prejudice as hell but not to people she acknowledge. We can't just expect powerful women to get on their knees for us because we're the MC. We have to work for some of them. Especially one like Nico, who's smug as hell and can actually back it up in a fight. People may say she lost to Ella but she didn't run from that fight. Even when Ella tried to make her run from it.
I do hope she doesn't become a big softie though. Her being nicer is fine but I like the way Nico is written.