I doubt the instructor who told her she could dive without an inflator hose took the time to cut the neck seal to fit, but it might have happened to fit already. I see no reason to think a tight neck seal contributed to her death. Where did you read that she was asphyxiated, not drowned?
Many times throughout the Complaint, including in at least 6 of the Counts of Negligence.
Most notably:
80. The compression of air inside enclosed spaces while a diver descends is known as “squeeze.” “Squeeze” can be uncomfortable at shallow depths, increasingly painful as the diver continues to descend, and fatal as a diver approaches a depth of as little as 100 feet, where the water pressure surrounding the diver’s body is three times more than the ambient pressure on the surface.
208. At a depth of 59 feet, the water pressure on Linnea’s body would be 25.53 pounds per square inch (“psi”), almost double what she experienced at the surface. At this point, Linnea was experiencing suit “squeeze,” which would have been painful. She was visibly exhibiting the symptoms of “squeeze,”
including the inability to breathe without restriction, to kick freely, and to move her arms freely. She was obviously having difficulty breathing, exhaling frequently and sharply.
224. The audio captured by the GoPro camera indicates that Linnea was trying desperately to breathe, but she was unable to do so due to the pressure being exerted on her body and the squeeze exerted by her dry suit. The walls of Linnea’s torso, her chest and her neck were being crushed by the dry suit.
238. This misinformation was intended to mislead the official investigation into Linnea’s death, and it succeeded in doing so. As a direct and proximate result of Defendant, Jeannine Olson’s, misstatements to the investigating authorities, in violation of Montana law, the Montana State Medical
Examiner, Aldo J. Fusaro, D.O., overlooked critical evidence of Linnea’s manner of death, including severe bruising on Linnea’s neck and body caused by dry suit squeeze; pulmonary edema caused by negative hydrostatic pressure; and the presence of watery sphenoid sinus fluid caused by Linnea’s rapid descent and inability to mitigate squeeze in her sinuses and nasal cavity.
Consequently, Dr. Fusaro mistakenly categorized the manner of death as “Accidental,” and he completely overlooked the actual cause of Linnea’s death by drowning.
259. Prior to dying, Linnea survived her personal injuries proximately caused by the negligence of Gull Dive, for a period of time, injuries that included, but were not limited to, hypoxia, respiratory arrest, hypoxic convulsion, negative pressure pulmonary edema, accumulation of sphenoid sinus fluid, loss of consciousness, cardiac arrest, severe bruising and squeeze of her torso and neck, asphyxiation, severe emotional distress and mental anguish.