If one of the grandparents was a white, specifically a pink white (white/beige cross), then this is were she is getting the white and the beige in her background.
Beige chinchillas normally have pink ears and pink pads on their feet and have eyes that can be from a light pink to a dark red. I have never seen a beige with dark gray or black eyes ... UNLESS there is an ebony in the family background. If this is the case, you have an extremely light tan chinchilla, often referred to as a pastel. BUT you would have to find the ebony in the background to be able to say it is a tan or a pastel. This is one of the places family history is so important!
This is also the mess you end up with when you cross mutations, especially with an ebony. You end up with kits that you can not tell what color they really are ... genetically ... and ... some look like a washed out version of what it should have been.
When you have a chinchilla as a pet/family member and do not breed it ... the color should not matter ... they are all loveable, cute and sweet. But, when you breed everything counts ... from the color/hue of the fur, to the thickness of the fur, to the big blocky bone structure, to a healthy medical background. If this was taken into consideration with every kit that is born, there would be very few chinchillas that would die early in life, or have to suffer unnecessarily and/or be sickly.
If you read much of the posts here and in articles in the Chinchilla Club Magazines, you will see where I harp on not breeding pet store chinchillas and to introduce a good blocky pure standard gray back into the line about every 2nd or 3rd generation. Note I said Pure Standard Gray. A pure standard gray is one who has no other colors in it's background as far back as you can go. These are getting harder and harder to find. You will see lots of standard grays that come from parents where one or both of the parents are are mutations ...
this is not a pure standard gray. These standard grays are carrying mutation genes that can (and usually do) show up in future generations.
Jo Ann