Her best combo is
123, B3, j.2, 3, 2, bf2. Does more damage, but a lot harder to pull off.
Problem with both of them is they start out with the 123 string, which really sucks. 1 is a high, so if they duck you'll eat shit. It's got shitty range. Her crossups blow, so getting a cross up into 123, isn't going to reasonably happen.
Only way to reasonably land it is if they whiff something big.
Well, you can cancel out of 12 into Wing Evade and do Wing Evade 2 which is an overhead. That'll let you continue the combo as well so:
12xxWE2, 123, 3, MC is my go to and does I believe 30%. WE3 is also really good since I believe it gives you pretty decent frame advantage.