Mimi, being in the concrete operational stage of development, is likely able to understand the concept of conservation. This means that she should be able to understand that even if the two glasses of water appear to be different in terms of their shape or size, they actually have the same amount of water in them if poured from one glass to another. Therefore, Mimi is likely to correctly compare the two glasses of water and understand that they are equal in volume despite their appearance.
