...The head position is only high when she takes a breath. The rest of the time its lower than normal breathing height....
Think her average head position is in "our" wished surface line. For me what also is interesting: She seems to throw herself out the water and this while her stroking arm is too far back to help. Is it her kick that helps also?
What I always think about loping seen by elites: The loping helps to get the recovery arm above the front wake and they'll get their arm full of water for the catch a little msec earlier.
FWIW with best regards,