I was 32 (and classed as an older mum!)when I had my daughter and I was told she was high risk for Downs Syndrome.(can't remember the figure)...but I gave birth to a perfectly healthy baby.I too refused the amnio for the same reason

If she really is worried, I am sure you can get a more accurat 3D scan done (you would have to go privatly)This scan identifies more of the features of a Downs Syndrome baby.

I am sure you will get lots of good advice on herexx