NOV 2019: PLEASE READ MY UPDATED POST HERE.
If you're looking for boots that offer a little extra height (and traction) to give you more leverage and confidence while riding, as well as protection, here are some ideas.
Options 1-3 are fully lined with Gore-Tex, considered to be the most breathable, waterproof membrane you will find in footwear.
$449. My favorite recommendation (and most expensive, unfortunately) are the Daytona Ladystar GTX's above. Yep, you get *that* much extra vertical height. Definitely the tallest women's motorcycle boots on the market that I've seen so far that also provide plenty of protection for street riding. You can read my review here. Two places to buy these online; Helimot or Revzilla. Pick your poison! Daytona also makes the same boot for those of you over a size 40, called the MStar (typically marketed towards men, even though its the same exact boot).
$249. Although the Siren doesn't feature Gore-Tex, it's waterproof and breathable per Dainese. Also, the Siren has a very generous calf space, so this is a great boot if you need a little more room. Remember that Dainese's fit profile is a little narrower everywhere (except the calf). I've included a photo showing where your foot will be once inside the boot (0" mark). So that's almost 2.5" of extra height. You will get the same height on the Svelta (#2) and Luma (#3) as well.
$249. The Luma isn't a full height boot, but falls just below your calves. The height on these and the Siren will be the same.
$269. I love the Svelta because it actually doesn't have a large calf space since it zips all the way to the top. I don't need extra room there, so for me, it's the perfect boot. If you have a slender leg then you'll like the streamline fit on the Svelta. Another fabulous Gore-Tex lined boot!
$299. The Alpinestars should have a slightly wider footbed and slightly larger ankle space. A good amount of calf space is provided as well.
$230. Sidis have a more generous fit all around than options #1-4, especially the ankles / heels and arches (better for high arches). They're incredibly comfortable as well, and also have a very generous calf space. As generous as the Sirens (#2), maybe even a tad more.
For those of you that can't afford a new pair of boots, here are two ideas:
Try new insoles to add height and / or comfort. Dr Scholls, Superfeet, etc. I also wear Sidi Vertigo Leis but they took away from my vertical heiaght so I couldn't get my heel down at all. So I added another insole, and a heel cup to give me an extra inch. It also made working all day in them far more comfortable.
Try checking eBay. I found a barely used pair of Daytonas on eBay for less than $100 because I set up an alert to let me know if someone posted a pair in my size. It took a year, but a year later I found them!