Just putting another spin on things - my twins are 23mths old and one of their traits is tantrum throwing but to an extreme. Will fight and kick and go on for excessive amounts of time and both of them are seeing a Speech Therapist as they have developmental delays (both differing delays) and the speechie has told me she sees signs of them both displaying traits of ASD. As they are still young it is a wait and see approach with using services available to us, but if you think her behaviour is to the extreme it might be worth having her assessed, even if it is to give you peace of mind that she is just a normal 2yr old