RE: Bows for my wife???
I worked a show the other weekend and the Kobalt was a huge seller for the ladies.
The Kobalt is 28" ATA with a 7" BH and has an adjustable DW from 20-60lbs with an adjustable DL of 21.5" to 28". The Trykon Sport is 30" ATA with 6.5" BH an adjustable DW of 20-50lbs with an adjustable DL of 23"-28.5".
The Kobalt has the XT 500 limbs, which are the same limbs that are on the Katera and the Katera XL, which I really like. Both bows have the Cam 1/2 Plus, which is very smooth and should do her well. With the Trykon Sport having an extra 1/2" of DL, it might be easier to sell this bow if she ends up not getting into is as much as you expect (hope).
I would think either of these bows would be great for here. If it were me purchasing one for my wife, I would get the Kobalt as I like the longer BH and the limbs it has more than the Trykon Sport.
Good luck, I hope your wife jumps into this head first and really enjoys herself!