IF she can spot the ground properly, it's easier and less scary than a non-twisting Yurchenko.
She should be comfortable doing a double front 1/2-out and a double back 1/1-out; Ideally, she should be able to do these straight up and down on a trampoline (a mat throw for the landing is fine); however, if she can do them off a tumbletrak or mini tramp into a pit, that's the next-best thing.
The key is that after she comes off the table, she should be able to watch the landing for the entire rest of the vault without ever losing sight of it, especially in the last 1/2.