I’m 1000% pro-artist but you can’t expect a record label to want to renegotiate after a project performs moderately well just because the artist is on the way to becoming a star. Yes, she is the one writing her songs but I’m sure she didn’t pay for the mixing/mastering, producers, photo shoots/videos and marketing. A label isn’t going to want to renegotiate when the artist hasn’t shown a track record of being profitable yet. It’s simple business.
Also, as someone that knows several artists with deals, if they really gave her a 40% profit sharing deal, that’s really good.
This isn’t to say they couldn’t be ripping her off. I’m assuming 1501 is a production deal with 300 as the record label so they could easily be withholding the true value of how much money she’s actually entitled to but she’s not gonna know that without an audit.