Okay the highest I've got off of it was:
jip, F2, 1, 2, 1+2, (Red Dash), Down Slash, U3, Down Dagger, B1, 1, F4, Up Slash, 1, 1, 2 (47%)
I also got:
jip, F2, 1, 2, 1+2, (Red Dash), Down Slash, B1, 1, F4, Down Slash, 1, 1, 2 (43%)
This ends with her standing reset.
jip, F2, 1, 2, 1+2, (Red Dash), Down Slash, U3, 4, Air Dagger, Jump, Down Dagger (39% + 1%)
Prevents wake-up attacks. The Down Dagger adds 1% if blocked, or 4% if not blocked. Opponent can only block if he rolls.
jip, F2, 1, 2, 1+2, (Red Dash), Down Slash, 2, 3, Up Slash, 2, 3, Red Dash, Slide (45%)
This one has hard timing.
jip, F2, 1, 2, 1+2, (Red Dash), Down Slash, B1, 1, F4, Down Slash, 2, 3, Red Dash, slide (46%)
Depending on your timing on B1, the opponent might be put behind Skarlet so you might want to move back a little before B1.
EDIT: Found a higher combo:
jip, F2, 1, 2, 1+2, (Red Dash), Down Slash, B1, 1, F4, Down Slash, B1, 1, F4, Down Slash, Uppercut (49%)
It's not good to end with uppercut because the opponent will be launched out of the corner so you can also do...
jip, F2, 1, 2, 1+2, (Red Dash), Down Slash, B1, 1, F4, Down Slash, B1, 1, F4, Down Slash, 1, 1, 2 (48%)
jip, F2, 1, 2, 1+2, (Red Dash), Down Slash, B1, 1, F4, Down Slash, B1, 1, F4, Down Slash, Jump, Down Dagger (46% + 1%)
Prevents wake-up attacks. The Down Dagger adds 1% if blocked, or 4% if not blocked. Opponent can only block if he rolls.