I really enjoyed the chapters so far. My only real gripe is that the fact that Angie was rampaging through San Francisco wasn't really pronounced at all. It could have been any city. If you put your protagonist into a well-known city at least make sure the reader "feels" that. It doesn't need too much to achieve that. Angie tripping over a tram or her view glancing the Transamerica Pyramide or the Golden Gate Bridge and she decides on a whim to go in the direction with the intent to destroy it, the chapter would proceed the same as she doesn't arrive at the landmark within three seconds.

The same criticism can't be brought up with chapter two and three though as you have never told us where Ayako was beyond "Japan" and most of Suzi's giantesstime so far took place in the open ocean instead of in Sydney proper.

I have two questions though:

One:

Now that we now that recently mutated algae are the reason for the massive growth and change in demeanor among the affected women: How did Angie and Ayako got exposed? Contaminated water? Swimming (though we pretty much just had that with Suzi), maybe direct consumption? Though that would be quite the cliché given Ayako's Nationality...

Two: Is the glowing bright orange hair unique to Suzi or did Angie and Ayako had those particular hair color as well but nobody thought it was worth mentioning?

As for suggestions: I have less suggestions for the women themselves, but for where they should roam:

If you have a story with mayor cities as canvas you got to have Chongqing as the chinese City outclassed Tokyo as the largest city on Earth a few years ago (though Tokyo still has more inhabitants).

Brasilia - With a giantess roaming Brasil's capital you are in an even more dire situation than you normally would be... Take your chances with the monster inn the City or flee to the Rainforest... That's less of a question of whether you die, but how?

Addis Abeba - A politically inclined giantess would go the Ethopia's Capital immediately to shut-down UN Relations and the Headquarters of the African Union post-haste to make sure her toys and snacks can't mount any defense whatsoever.

And whilst I don't have a specific city in mind: Have one of your giantesses rampage in the Balkans. They never get any giantess attacks. And they might very well be thankful for that, but someone should change it regardless.

Aww darn is the story really completed? Seeing if the giantesses have some kind of morality or plan would've been exciting. Especially with this last giantess. They seem to still have their memories before they turn giant so is Suzi heading straight back to the laboratory because she knows her daughter is there? It would be interesting to see what her plans are, turn her daughter into a giantess, keep her as a pet, overwhelming drive to get pleasure from killing her, or something else?