There are many ways of doing her combos. And usually, optimal ones are tight on frames and don't lead to a restand, which, given the fact that Cassie got blessed with one, should be prioritized.The Digital Soldier combos in the OP don't look anything like the combos I've been seeing Cassie users do on stream. What are the current optimal ones?
Also, some combos can be used to switch sides, which isn't optimal per say, but can give you an advantageous position.
Aaaand there's also the Male Characters and Female Characters differences in combos...