Reminder:
Firefly is present for 50% of 2.0 (you think it's 80% because that portion is in the middle)
Not present at all in 2.1
Present for around 10% of 2.2
Present for 25% of 2.3 (Her "shill" patch, actually mostly IPC)
This is why she's getting her own actual share of the story in 3.8