@ToKyo PewPew of course!:-) Since they're both mids and are Phase's best options to close in on the opponent, the opponent will have to hold either a mid P or K, so the guessing game is easier for them. My sister has figured that as well, so it's harder to close in on her since she can quickly react to them
I don't think the guessing game becomes easier in any way. Maybe only on someone who's playing on auto pilot and does not make use of all her other ways to get in on someone.
I use a few other options like the jab as you have stated, but I mostly rush in with phase 4 and use those two mostly for rush down or baiting the opponent to hold, but that's just the way I play with her that makes me feel comfortable and more dominant. Running in and jabbing or throwing to me is risky against more defensive players.