I've had my frustrations with Biden, but even at my most pissed-off moments during the summer I would not have considered Nina Turner as even a remotely acceptable alternative. She is a deeply, deeply unserious person who would be better off being jettisoned from the party entirely.
Don’t worry, I’m sure she’ll have left by her own accord by the end of the decade - she’s still the politician who seems most likely to be courted by the Greens for their own nomination at some point in the 20s or 30s.