Hello my granddaughter is nearly a mth old an her oxygen keeps going up an down. She is still in hospital. I don't feel safe her coming home yet. Anyone know where I can get help getting her the sock or mat that monitors her oxygen an breathing ?

I’m sorry your granddaughter is unwell & hope she is now improving.
Most baby monitors can be bought from local baby shops &/or online.
Red Nose has some information about the different types.
https://rednose.org.au/article/home-monitoring

However, I think it is important to discuss with the Medical &/or Nursing Staff about what may be required after she is discharged.
Sometimes, if a baby needs to be monitored at home for Medical reasons, an appropriate monitor can be accessed by the hospital.