She looks like a tabby moggy to me at the moment, more than anything. She could gain more characteristics as her skull matures, though I've some doubt, as there's nothing distinctly MCO about her at the moment. MCO are a slow growing breed, though - my 2 year old isn't fully grown/matured yet.
MCO aren't really known for pointy features on the head, aside from the ears.
Here are the only confirmed half-MCO I'm aware of (more exist, obviously, these are just the only ones I can vouch for). DSH father, pedigree MCO mother. They very obviously retain a good amount of MCO structure, despite the differences, like the strong muzzle and general eye shape and ear set, despite the top of the head being visually rounded, which is not acceptable in pedigree MCO. Notice the MCO like eye shape is present early on, as are the lynx tips (fur on tips of ears), and large muzzles start growing in fairly early.
Anyway, here they are as they grow, up to 4 months.
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Crosses aren't going to be predictable in appearance, but well-bred MCO have very strong features which will tend to stay, even when paired to a moggy.
HCM is a hereditary heart condition. MCO should be tested for the gene, and have an ECG prior to breeding so there's minimal risk of having kittens with HCM born. Lack of the gene doesn't completely eliminate HCM risk, which is why ecg screening is important.