Multiple accounts on one PlayStation
I currently own up to Storm blood on PC and ps4.
My girlfriend is interested in playing this game with me, I would play my account on the pc while she is on the ps4 on her own psn ID.
My question is do I need to buy another copy of the game or can she play on my copy but with her own psn/game account?
If I do have to buy a second copy is there a trial we can do first instead to see if she enjoys the type of game. It's her first mmo.
Edit: How much does the base game cost these days? I know HW is free at the moment which is nice.