Not sure of the breed, but COULD be a copper palomino , I can see dappling over the shoulders and hip area.
Could be a champagne color variation. Is that some roaning on her face.
Does she have a dorsal stripe
Old how is this horse?
That could make a big difference , especially if she is very young, as we all know that most gray horses are born a different color. One of my TB colts was born a solid bay, black points, but there was a slight dun color around the eyes, which is a dead giveaway that the horse will turn gray (sire was a big dapple gray so of course he did gray out) but it took many years.