My daughter gets blue hands and blue feet when she gets cold is that raunauds?

Yes. Raynaud's syndrome (or blanching of the limbs) is exactly what you describe . However this is not a disease--it is a syndrome which can be caused by multiple disorders. This needs evaluation by a doctor.
Raynauds. possibly advisable to wear warm socks and mittens to avoid the temperature changes also should seek medical evaluation to determine if there is an underlying medical issue-thyroid ,connective tissue.
Maybe. You didn't provide us with the age of your daughter. Babies under a year or so do this as a way to preserve body heat .It is a natural event and disappears if the room is hot or they are in warm a=water. If she is a teen or adult I would suspect Raynaud's.