I think this Girl:
http://static3.wikia.nocookie.net/__cb20130901115808/onepiece/images/thumb/9/9a/Ain_Marine_Portrait.png/120px-Ain_Marine_Portrait.png "Ain"
is actually JB, let's know what Ain's
devil fruit is, according to Onepiecewikia:
the first ability is about changing the age,
"Ain ate the Modo Modo no Mi, a Paramecia-class Devil Fruit which can turn back the age of anything and anyone through an energy orb she produces."
We see here that JB changes
the age of marines:
http://www.mangasee.com/manga/?series=OnePiece&chapter=507&index=1&page=17
http://www.mangasee.com/manga/?series=OnePiece&chapter=507&index=1&page=18
And it stated also that her ability can:
( If she is in a volcanic area, she can also turn rock formations back into lava to attack her enemies indirectly. ) and in this pictures:
http://www.mangasee.com/manga/?series=OnePiece&chapter=595&index=1&page=19
http://www.mangasee.com/manga/?series=OnePiece&chapter=595&index=1&page=20
we see JB and BB in a volcanic or an island
that turn into a burning island because of
JB ability used her ability
after all she won't be captured without a fight,
and as we know BB can seal Devil
fruit power or everyone touched by BB can no
longer use his abilities, that's maybe why
she didn't change him into a baby blackbeardy,
that's how he catches her.
and we see Akainu tell her that when she
escaped,
that means she worked with
marines or involved somehow, and guess
what, Ain used to be marine officer
but she quit (run away), because
they used her, that's why she run away.
Nakamas, what do you think about this
theory?
I think also that the one who cut Zephyr's hand was
BB, that's why she hates him so much.