Around 45 years ago my son began diving in the pacific ocean at 4 or 5 years old (-not far from shore and not too deep - but in his mind he was a Diver) with a highly modified US Divers horse collar PFV. As I recall it had a SCUBA Pro hose attachment a SeaTec inflator mechanism and a dump valve also from Sea Tec.
For his 7th Christmas he received a bright blue (his favorite color) Sea Pro At Pac BIU complete with his name embossed on the floatation bag at the factory.
As he matured and grew the only adjustment required was to periodically loosen the straps. And did he grow ! He matured into a 6 foot 3 inch adult .
Now his children are using the same well used well worn At Pac in the family pool as a practice unit .
Therefore I certainly recommend a BIU and strongly urge you contact
@tobin
In our family diving was a privilege not a right They had to maintain good grades, be active in their community and church AND keep a dive log..And now after all these good and great years the logs are interesting hilarious reading.
One thing we as diving parents demanded it that on every dive they seek out an item of marine life, research it and ID with common name and scientific name for their logs- which they did
A lot of work but we were handsomely rewarded..3 doctorates...My son who really embraced diving ? He became a NAUI (Life) and PADI instructor, SSI Pro 5000, a board certified ER & Hyperbaric doctor and is the director of ER/Hyperbaric at a large regional hospital
Hope this has been some sort of a guide or blue print for you and especially your daughter diving and professional career
SDM