offspring from the wild hatchery cross only in extremely rare cases survive to adulthood and therefore whether they are wild or hatchery is completely irrelevant..

however what has happened in your senario is that a wild female full of eggs has been removed from the reproducing population just as if it had been killed by a seal , tribal net or sport fisher.. a wild female spawning with a hatchery male is exactly like a wild female that never spawned.. it's an extremely sad occurance and all the more reason to never release the hatchery steelhead you catch...