Did she suffocate by breathing all of and running out of air? no

Did she suffocate by strangluation? no

Did she suffocate by having her head put under something?yes

Did she suffocate from her misunderstanding mother who saw her dreams of becoming a dancer to be a waste of time? not exactly, no

Did the man from the previous mystery decide he needed a set of matching nails for his new hair and decide to cut off a womans nails while she was asleep and attatch it to his own fingers as well as stealing her garments causing an uproar when the woman flashed her ankles? haha

Was she accidentally put inside of a coffin? no