the bite of ice cream was brynn duncan still is n't sure which one sent her into anaphylactic shock that her food allergies change so frequently , keeping track is almost pointless that her head near the foot of her bed , chattering away as her mom changes the access to her chest port .
melissa duncan , a paralegal by day , dons a mask and surgical gloves before disinfecting the area around the connected to brynn 's jugular vein .