Nickers I see splash, sabino and frame in the dam. Splash because of the way the blaze falls off the side of her face, sabino because it avoids her eyes, and frame because she doesn't appear to have any white on her chin or upper lip - her face marking looks "framed" in chestnut. She also doesn't have very high white on her legs considering the strong splashed white characteristics her face marking displays, so there's a white suppressant at work there, and frame wants to suppress white on the legs.
Do you own the dam? If so, testing would be a good idea, it doesn't cost much and it would tell you for sure whether you would have to avoid frame if you put her in foal again.