@ToKyo PewPew and @BBoyDragon are great players of Phase 4: you can see their videos and I'm sure that they will be glad to help you =)
Free Step Dodge
Kronin
KING JAIMY
Use jabs at close range. H+K is safe and great at medium range. Try to tick throw your opponent whenever you see an opportunity. Don't use 3P, 6PK, 66K, PPP or 8K unless you are fairly sure you can counter hit your opponent. Opening up people with Phase is one of her major weaknesses alongside her unsafety. Good luck! 