Either she underestimates the impact of Friendliness on her existing goals, or she is mistaken about what her utility function actually is.

Or she's already friendly.

Although, it is conceivable that her long term EV would be compatible with our CEV but not with her short term V when she hasn't yet realized this.

And... now, I am reminded of Flight Of The Conchords:

"Can't we talk to the humans and work together now?" "No, because they are dead."