It is normal for the mother to help during a hatch but it is usually done when the egg is still under her and more than halfway out, then she would help. What we may have observed was excess yolk that was still present or some sort of abnormality with the chick - either way, she had no hesitation to do what was needed. We are not to question or challenge the why but just accept that this is natures way.
*We remind our viewers that one of the hardest parts about these live cameras is that they capture the natural world in its purest state, and sometimes the natural world can be cold and unforgiving. While it’s a privilege to watch the intimate life of these birds in the wild, the truth is that some may not survive - the parents will dispose of things - it is the "Owl Way" - viewer discretion is advised for younger and otherwise sensitive guests.