Indeed! Though I'm certain Tanya trains hard (the way a dancer does), I also would credit her with having been given a natural gift. Does mere training make you able to do a split? Or lift a leg so high and just hang out, talking, with your leg practically vertical? Training helps of course, but if you don't have it, you don't have it. And they have a lot -- perfect physiques, musicality, sensitivity, beauty, athletic ability, dramatic ability, intelligence, will-power. The list could get annoying, thought maybe it's not an uncommon list needed to function at the highest levels.
you're absolutely right, but don't forget that both Tanya and Max started out as single skaters till the age of 14.(!) that's why they're so comfortable with jumping and their landings & lines are so precise. I guess Tanya was also trained to be flexible; she had 10 year (from the age of 4 till 14) to focus on her posture, strengthen her muscles and of course, work on that flexibility. The early years are very crucial for that. And doing all that without having to worry about a partner must have been easier. Both physically and mentally.