Fire Emblem Awakening: should Lucina inherit Galeforce?

Before you all are like "durr of course give her galeforce galeforce is the bestest skill evah!", let me explain:

I just beat Chapter 11 (Hard/Casual). MU is Lucina's mom, and is currently a lvl 1 Dark Flier. What I want to know is, should I do a crap-ton of grinding to get MU to lvl 15 before Lucina joins in 2 chapters, or should I have Lucina get Galeforce on her own once she joins? What do you all think?

There's no real need since she'll be able to get it on her own.

though it would save a lot of future grinding, and would make your playthrough a bit easier.