if she didnt have a merle would say she isnt a carrier of the gene
Merle is not 'carried', it's a dominant gene, it is always expressed. That's why you will statistically get half merle pups when breeding a merle to a normal dog. You can have cryptic merles where the coloring of the dog hides the merle pattern. Is the bitch in question the brindle in the original post? That's not a merle, it's a blue brindle.
yeah mate its the brindle 1 in the original post. so shes a blue brindle. i have been told loads of stuff. sum 1 even said the black and whit boy is a black merl? lol am