You cannot say the baby would have died anyway. The sleeping surface definately matters, and the risk in this situation was hugely increased by the Mother's negligence. Yes some babies do die of SIDS and their caregiver has done everything under the sun to reduce the risk. However, this is not the case
Safer Sleep Environment to reduce risk of SIDS:
Back to Sleep: Always place your baby on their back for every sleep, including naps.
Clear Sleeping Space: Keep the cot, Moses basket, or pram clear of any soft items, such as pillows, duvets, blankets, and toys.
Firm Mattress: Use a firm, flat, and waterproof mattress that is in good condition.
Room Sharing: Have your baby sleep in your room, but not in your bed, for at least the first six months.
Avoid Overheating: Dress your baby in lightweight clothing, and avoid bulky blankets or too many layers to prevent overheating.
Lifestyle Factors
No Smoking:
Avoid smoking during pregnancy and after birth. Keep your baby's environment smoke-free.
Avoid Alcohol and Drugs:
Do not drink alcohol or use drugs during pregnancy or after birth, and avoid having anyone who has consumed them share a bed with the baby.
Breastfeeding:
Breastfeeding, if possible, can reduce the risk of SIDS.
Use a Dummy:
Offering a dummy at naptime and bedtime can also help to reduce the risk of SIDS.
Other Considerations
Tummy Time:
Supervise your baby during "tummy time" to strengthen their muscles and promote healthy development.
Immunisations:
Ensure your baby receives all recommended immunisations, as studies show a link between vaccination and a lower risk of SIDS.
Forgot to also include as well:
Sleeping in the same room as your baby reduces SIDS risk because parents can more easily monitor the baby, provide comfort, and intervene in an emergency. The closer proximity to a parent seems to help the baby regulate their breathing and heart rate, and the ambient sounds of the parent's movement and breathing can help the baby wake more easily from deep sleep, a crucial factor in preventing SIDS.