You interact with your stepsister via an in-game messaging system. These text exchanges directly impact your relationship and unlock new story paths.
She may flirt . She may smile at you from across the pool, or "accidentally" wear your hoodie. But she never crosses the final threshold. She keeps the knife (metaphorically) behind her back. She flirts just enough to keep things exciting, but she is always running a risk assessment in her head. life with a flirty stepsister final girl ca better