Against Valerie you do the same.
Valerie’s C will go through projectiles, but to go through the large one she needs to be very close, taking quite a risk. Large fireballs will also make it very hard for Valerie to space a jump B correcttly, making her jump A(A) the only jump in alternative, which you can anti air with sA.
Valerie’s fA is still a very good poke though, so you might want to mix up your large fireballs with you normals ones, which unless you only have 1 remaining hp should trade for you and scare her.
Valerie’s last tool to get in is her jump C, which you can punish with throw or even anti air with sA if you space it and time it right.