imo , p4's strongest move is her 2p rather than the jab or the 6p because it's similar to chrisite's 9p in the sense that they both are neutral on hit which basically means that if you learn to chuck these moves in between your free cancels , ur pretty much getting almost a "guaranteed second chance" to hit a button . i am myself trying to include christie's 9p in my gameplay.
as far as safety is concerned , ayane is NOT a safe character , mind you . she only feels safe because of her godlike delays in her strings which demands respect from even the highest level of players .
p4 has only 1 problem , if she cannot start her teleport shenanigans or is kept away from you , she's pretty much locked .