Beth...Although I don't agree with the statement that makes up my subject line, Michael has a good point about seeking more training and about doing a pre-dive check...For some reason I have seen many husband/wife (male/female) dive teams where the wife (female) relies a bit too much on her husband (male buddy) to fix things for her. I don't mean to sound sexist or for that matter that we should not rely on our buddies to help us out, and if this offends anyone, please accept my apologies.
It is a fact, however, that in every dive team there is a buddy that is the weaker one and one that is the stronger one. The weaker usually depends on the stronger one more than they should, or the stronger one over supervises the weaker one. It's a vicious circle that we don't need as safe divers.
I always tell my wife that she should, within her level of experience, handle emergencies without my assistance at first and know what to do to help me if I get in trouble, so we practice OOA and other drills often.
Orally inflating a BC underwater is almost a useless skill, although we all learned it on our open water training. I believe, however, it is more important for us to know how to orally inflate the BC on the surface and to not be afraid of sinking a bit, while inflating, in order to achieve buoyancy at the surface.
Just try this on for size, suppose that when the lady noticed she had a problem with her power inflator, she disconnected it and tried to arrest her runaway ascent by dumping air using the pull-to-dump feature, would it have made any difference for her to know how to orally inflate her BC underwater? If she only had remembered to ditch her weights, she would have floated to the surface.
This is a sad case of one minor emergency that when compounded by panic, caused a snowball effect which resulted in a fatality. It could have happened to anyone of us! I believe it behooves us more, as divers, to learn how to control our emotions, thereby preventing the snowball efect that replaces sound training with panic.
Semper Safe,
Rick