Appy patterns are such a crapshoot lol You never know what you're going to end up with
And just when you *think* you know, you end up with something entirely different then what you were expecting..
There's a big appy breeder that I've been following their program for a while and this year's foals have been quite the surprise.. They bred a bay roan spotted hip mare to a chestnut spotted blanket stallion and ended up with a bay leopard colt.. They bred a chocolate chestnut (darker chestnut than your typical bright red) to the same stallion above and got a VIVID, put on your sunglasses, bright chestnut near leopard colt with HUGE spots.. Then they bred to chestnut leopards together and ended up with a snowcap colt, a leopard with the chestnut spotted blanket stallion and got a blanketed colt, and finally a frosted blanket red roan mare to the chestnut spotted blanket and got a chestnut filly with some white "thumbprints" on her hips..
Only "guarantee" you have with apps is that if you use a few-spot or snowcap you're gonna get a colored foal or a foal with characteristics that will color out later..
Now for your mare, I would doubt she'd produce spots, especially with solid or pinto, but who knows for sure
More than likely she'll produce the same roaning/frosting.. BUT that being said, last year I had a colt born, sire is my black near leopard + splash +varnish roan stallion and dam is a black tobiano + splash mare.. Colt was born solid black with just characteristics (mottling, and striping on hooves), come clipping around a month old he had a few white hairs coming in on his hips.. By 2-3 months old he had even more and what looked like tiny spots (about the size of a pencil eraser), by weaning even more white hairs, in his winter coat you could tell he was getting white hairs through out his body as the lower part of his coat looked white but the tips still black giving him a frosted look, so was expecting frosting or for him to have gone white due to the varnish roan since the "spots" he had were so tiny, well just took the clippers to his hips and "unwrapped" an area to find he is indeed spotted with frosting
No doubt there's spots there now, and since the white looks to go up to his shoulders I wouldn't be surprised to find spots all the way up there as well
Course I'm ecstatic that there's spots, but definitely not what I was expecting at first!