Posting 2 proofs here, one was superceded but figured since they are side by side in the charts I'd post both anyway
So first up a nice simple proof Tiger! - Chartreuse is dominant to Burmilla - Blue Shaded. Pulled from under the Chartreuse by Burmilla - Lilac Shaded
Second is more complicated. Tiger! - Chartreuse is dominant to Australian Mist - Dark Chocolate
AirWrecka hides Australian Mist - Dark Chocolate. She produced and Australian Mist - Dark Chocolate offspring when bred to a Foxie - Argyle, he hides Burmilla - Lilac Shaded or better direct from his Mother.
AirWrecka then bred with A Tiger! - Chartruese and produced a Tiger! - Chartreuse. We already know that Russian - White is dominant to Tiger! - Chartreuse therefore she must have passed her hidden fur.