First, decide what kind of sharks. 'Sharks' is a very broad category. For a lot of people, the first shark they see is a nurse shark, then maybe a Caribbean reef shark...and that could be all they ever see. It doesn't have to be, but as you 'move up the ranks,' there's a bit more to it. From a U.S.-based perspective, here's what I consider the 'escalation':
1.) Nurse sharks - fairly common in southeastern Florida and Caribbean diving (but not the west coast of Bonaire).
2.) Caribbean reef sharks - likewise, but not as common generally. The Bahamas are famous for them, as is Turks & Caicos; the Caymans, the outer atolls of Belize and St. Croix are also good places to see them.
3.) Tie - the sand tiger sharks on the deep, off-shore wrecks out of North Carolina (summer/fall, IIRC)...and the lemon shark aggregation out of Jupiter, FL (winter).
4.) Tiger and lemon sharks...with chance of bull sharks. Jupiter, FL if you do shark feed dives (watch the leader feed the sharks) or at least baited dives; likewise the Tiger Beach area of Grand Bahama. If you just want tiger sharks, perhaps Cocos Island in the Pacific Ocean.
5.) Great Whites - cage diving near Guadalupe, Mexico, via live-aboard.
That's not the end-all, be-all of shark diving. If you're willing to drop down below the Caribbean region to the Galapagos Islands, you can dive with hammerheads. The Socorros out of Mexico, Cocos Island or Malpelo, I believe can also offer that. The Galapagos, Cocos, Socorros and Malpelo are famous 'big animal' destinations and sharks are amongst those big animals. I've read of oceanic white-tip diving near Cat Island in the Bahamas (which sounds too rich for my blood).
I'll link you some threads that may be of use as your daughter grows in her diving.
Sun Dancer 2 (Belize) May 2015 -
http://www.scubaboard.com/forums/li...ving-belize-via-sun-dancer-2-may-2nd-9th.html
Turks & Caicos Aggressor II Report Apr. 2018 -
Trip Report - Turks & Caicos Aggressor II 4/21-4/28 Trip Report
St. Croix Research Report Aug. 2017 -
Trip Report - St. Croix Research Report Aug. 2017
Morehead City, NC August 2015 -
http://www.scubaboard.com/forums/no...us-dive-center-aug-9-13-2015-trip-report.html
Jupiter 2014 -
http://www.scubaboard.com/forums/florida-diving/491927-jupiter-trip-report-9-7-14-9-11-14-a.html (Jupiter, FL, without shark feeding).
Emerald Charters Trip Report 2017 -
Trip Report - Emerald Dive Charters Trip Report (Jupiter, FL, with shark feeding, and a broad discussion of the topic and other options for shark diving).
Humboldt Explorer Jan 13-20, 2020 -
Humboldt Explorer Jan 13-20, 2020
My Research Notes from Planning Galapagos Trip
Note: a suggestion. Do not be in a hurry to go get in the water with a tiger shark. Get some experience diving with sand tiger or lemon sharks, medium-large scary-looking sharks that are highly unlikely to hurt you. Find out how you react to that. Diving with tiger sharks can be fun...but do not rush into it. I've dove with 3, 2 of whom were nearly 10 feet long. Loved it. Would not be eager to jump in with a 15 or 16 footer.