OK, got it. If I am reading your post correctly she is a paraplegic, primarily the left leg. So she has full use of the arms and is very capable of out swimming you as she is with out the scooter. Now don't get me wrong, scooters are a lot of fun and I have borrowed a friends from time to time. I just wanted to point out that while it is an option, it is not necessary. Scooters allow you to move around quickly and to change depth quickly without realizing it too so you have to watch that. IF you are swimming together you would want to be just out of the arms reach (as she will be swimming with the arm) which means you will have to pay additional attention to see if she has an emergency. Better option is to position as normal, but just a foot higher so her arms will sweep below you as she swims and you will have good observation of her, and still be in easy reach if she wants you.
The Valor was the ship I was on. Should be fun. You can book through the cruise line and tell them you want some special arrangements.
I just rechecked my dive log. The dives are wall dives so you have to watch your depth and several of the divers were well below me. The cruise line sets limits on the dive operators on how deep you can do (I believe all our dives were below those limits). Please note I at all times was above or level with the DM. In fact for a portion of many of the dives I was next to the DM as we were the last two in the pool as the others surfaced as the ran low on air. I would take me insta-buddy to the surface and then return to diving next to the DM. I did, on occasion play the "I have Deco to do" card, to stay a while longer. NO point being back on the boat while you still have air in the 4 digits.
As it was I was back on the boat with lots of gas left.
Grand Cayman Viz 100
90 Ft Dive Time 39 min Average Depth 52, remaining air 1102 PSI
48 Ft. Dive Time 1:02 Average depth 32 remaining air 870 PSI
Roatan Viz 100
78 Ft Dive time 47 min Average depth 38 remaining air 1160PSI
71 Ft. Dive time 54:50 average depth 48 remaining air 1305PSI
Belize Viz 100
69 Ft. Dive Time 39:40 Average depth 44 remaining air 1334PSI
64 ft. Dive Time 1:03 Average depth 33 Remaining air 783PSI
Cozumel Viz 100 Drift diving, no need to swim at all.
77 Ft. dive Time 32.50 Average depth 44 remaining air 1450PSI
54 Ft. Dive Time 42:30 Average Depth 38 Remaining air 1247PSI
The diving was excellent.
I wore a 3mm Wetsuit (most went with bathing suits and were cold by the end of the 2nd dive). Which was a good choice as it protected me from the sun, jellyfish (got a face full on one site) and kept me warm. Water was 79-81F. I wore 11-12 pounds of weight.
So to recap, you need to hire an experienced HSA certified dive professional. I am conveniently available, just need to pay my air fare from Los Angeles to Florida and my cruise fees(I don't drink so it is just cruise, and dive).
When do we leave?
If you want to get a local, go to
www.HSASCUBA.COM and click on FIND MEMBER, enter the country you are going to and that will give you a list of locals who are Instructors, DM, and you can also look up Dive Buddies.
There are locals in Grand Cayman, and Cozumel, In Honduras (Roatan) there are some on Utila, the island to the west, you may get them to come over and meet you. None available in Belize. The list of instructors and DM go from longest certified to newest(higher number).