In the Worm epilogue Taylor actually has to live with the consequences of her decisions; she has no powers, a stump for an arm, and no support structure aside from her estranged father. This Taylor has not only avoided all of that, she's arguably been rewarded with all sorts of nifty bonuses. Now, with that in mind is it really so surprising that she's already started backsliding? She's in better shape than she's ever been, she's confident, and like you said, she somewhere where she has a completely blank slate.