This is on 5+? I'm not surprised. Most of the decent folk migrated to DOA5U. The people left, for the most part, do not know how to play and choose the cheapest methods to win.
Despite how much she can actually suck, I use her, and I love her. Fun character to play as. Not to mention I haven't fought an Alpha, or an Alpha that's good in ages.
They are extremely rare DOAN. I actually hate that majority of Alpha players are shit because it makes it difficult to really understand the Alpha MU's.
I feel your pain I devoted a whole week on learning how to counter/fight her. she's not really a problem to me. unless she grabs.. then you're screwed.
Look at it this way, she has like no useful guard breakers, and no safe moves. She used to have the best offense and the worst defense in the game. Now she has mediocre offense and the worst defense in the game.
I will also point out that Alpha's punishment is abysmal. She has no i7 grabs and a shitty i10 grab. Out of everyone in the cast you can abuse so much unsafe shit against her. Her holds are garbage so you can YOLO her when you stun her without risk of a counterattack. TL;DR, just rush down Alpha as much as possible with no fucks given.