Desperately hoping for your help as it is my cousins wedding next week and the quilt is to be her present,it would not be possible to unpick the quilt in time for the wedding and as i want to be able to give her a quilt that wont run the first time she washes it and as such ruining it,your help would be greatly appreciated.

The best thing to do would probably be to wash, wash, wash in cold water with lots of Synthrapol or Orvus detergent, and then use Retayne.

Rit Color Remover tends to work well on fabric that has had dye run onto it. It might leave you with a pink and white quilt. Would your design still work, if that happened?

Here's my page on the closest subject:
http://www.pburch.net/dyeing/FAQ/settingdye.shtml

Here's another quilting page with similar advice:
http://www.quiltbus.com/retayne.htm

Ignore anyone who tells you to use salt or vinegar, as it doesn't help, and can make things worse.