I’m not so sure about Elena’s oki game. To have good oki, you need to have either good safe jumps, ambiguous cross-up options, great meaty options, good option selects, or an intimidating close-range threat (like a command throw).
Elena’s unlikely to have good safe jumps because of her floaty jump, and because she doesn’t have a way to exert real frame trap pressure besides cr. MP, which doesn’t really lead into anything. Her throw game is ok because her walkspeed is ok, but it’s not enough. If her cr. MP hit low then it would make for some good high-low pressure with her :f: :mk:, but it doesn’t
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Again, because of the floaty jump, her crossup isn’t very good.
She could have some nice meaty setups (like possibly mallet smash, which leaves you at frame advantage), but even then because she’s got no follow-up pressure, the opponent can just block and wait for you to exhaust your frame advantage. If you hit with a meaty Mallet Smash and the opponent blocks, you can follow up with cr. MP, and maybe another one, but then?
It seems like her main mixup up potential at poke range derives from her low-hitting st. :lk: and her overhead :f: :mk: and :f: :mp:, but the former can’t be comboed off of (as far as I know), and the latter can (with difficulty), but it’s really slow to start up. Because of this the opponent just needs to down-back and try to react to each overhead as it comes. The slow one is easy to react to, and the fast one, while hard to react to, only deals 60 damage, which many opponents will happily take.
She might have some nice option selects to catch back-dashes, maybe involving Rhino Horn, but frankly, I don’t think most characters are so intimidated by Elena up close that they’d want to run away.
I love Elena, though, someone prove me wrong!