I did see this thread last night but wasn't sure if the babe had been born with down syndrome or not so left it - sorry - now I know where to direct you.
My dd1 was born 10 days early - so not that technically premmie but for the previous at least two weeks had failed to grow so struggled with that. She was born with what is technically called a Complete Atrial Ventricular Septal Defect - or AVSD. Basically holes in her heart.
She was fed via nasal gastric tube until her cardiac surgery.
Where did I get support from - fortunately my new HV and Community paed nurse were fab - we moved not long after dd1 came out of hospital - however can relate to the horrible one.
With that - perhaps she can contact her doc's surgery and ask for another HV - there were at least two in the little village I lived in and could have either.
TC has given you the link for LOADS> As your neice has a heart defect - you could also direct your Sis to the downs heart group - they were fab for us and we still have contact despite now living in Aus.
See from the other thread you already have those links.....
found this site fab - section for relatives too
here
Unfortunately if the HV or paed nurse has had no experience with down syndrome - they often do not know where to start.... my HV had limited dealings with Down syndrome but was just such a naturally caring, fab person who was willing to admit she did not know but would always try and find out things for me etc.
Your sister can also contact the Down Syndrome Association in the UK - they have great publications they send out to you especially for new parents - we really appreciated that. She may be able to through the DSA also make contact with other families in her area. The DSa also can provide you with growth charts specifically designed for children with down syndrom e- makes life a little easier when not so wise health visitors start making noises over where they are on the charts.
this book we found really useful
Dh and I did not read it all in one sitting but it was helpful for dipping in and out.
I am available via email though not in the UK. Did have our story somewhere I could possibly email for you....