You were one of Peng's closest friends, meaning you got a visit to his house for a night on that specific day. The turmoil is etched quite evidently in your head as the incidents were too strange and specific for you to forget so easily. However, unlike his other friends, who sought after safety just like he did...
You decided to stay behind, and investigate all the horrors a hut as little as Peng's would be hiding.
You make up your mind to genuinely go back to the cottage, once and for all. You gotta get to the bottom of this, after all. You sprint back from the murky forest grounds and reach the little path to the home you were so hospitably invited in for a stay. It's your lucky day: the door's open! You decided to sneak a peek at first, then go inside.
Everything seemed so... normal. What in the freaking fishbowl?
Oh, wait. Of course it's going to be normal inside. The horrors aren't waiting for you inside.
You saw her; Mai Nai, swiping off the door to the side, crawling in.
She had obsessive tendencies and you knew that very well... but she has a husband. Okay, he left her because he was scared of her attached tendencies, but still.
Why is she coming for you?