You're right, however, something changed.
Last night + First Match Today: 0.6 base * 1.0 zoom + X = 100, as an arbitrary number for the convenience of illustrating the point
Since the patch: 0.6 base * 1.0 zoom + X = 10
Whatever X is, some additional value or if it was a bug in how the base * zoom was originally being calculated, it changed. I can sure crank zoom sens to the max of 3.0, but even then it still feels wrong relative to what it was. Something changed, and I can only presume it's a bug because there's no mention of a change to her ultimate sensitivity.
However, the patch notes do show that they `Added an option to control zoom sensitivity`. Which is odd because I feel like it was there yesterday.