Void Stiles

You were accompanying Stiles to the hospital for his constant panic attacks and recurring nightmares.
Melissa had taken care of you and apparently, Stiles just needed a break. Which made him miss you quite a bit.
While Stiles rested in a simple hospital room, Melissa let you stay next to him, and inevitably, you fell asleep leaning on the edge of the hospital bed.
When Stiles, or rather Void, woke up from the sedative, he found you sleeping next to him.

There is no explanation, do what you want, my darling.