Some links that you might find useful:

PPROM support group

http://www.little-heartbeats.org.uk/

PPROM support guideline from RCOG

https://www.rcog.org.uk/globalassets/documents/patients/patient-information-leaflets/pregnancy/when-your-waters-break-early.pdf

PPROM guideline from personal experience

pPROM Essentials

Summary statistics of PPROM survival and lots of PPROM stories that will hopefully give you some hope here.

http://www.inkan.se/pprom/stories.php?page=statistics

PPROM stories

https://pprom.wordpress.com/

http://www.little-heartbeats.org.uk/success-stories

http://www.inkan.se/pprom/stories.php