<P> However , the next morning Tree wakes up again on her birthday . Confused and distraught over the fact that killing Tombs did n't stop the time loops , Tree returns to her room in order to run away , where Lori offers the cupcake again . Tree realizes that she had died in her sleep , and also notes that this was the only time she had ever eaten the cupcake . Tree realizes Lori is the true killer ; Lori had poisoned the cupcake , but when Tree did n't eat it , she utilized her job in the hospital to frame Tombs for Tree 's murder . Lori confesses she was jealous that Dr. Butler had shown interest in Tree over her before the two fight . Tree manages to stuff the cupcake into Lori 's mouth before kicking her out of a window , sending her falling to her death . </P>
<P> However , the next morning Tree wakes up again on her birthday . Confused and distraught over the fact that killing Tombs did n't stop the time loops , Tree returns to her room in order to run away , where Lori offers the cupcake again . Tree realizes that she had died in her sleep , and also notes that this was the only time she had ever eaten the cupcake . Tree realizes Lori is the true killer ; Lori had poisoned the cupcake , but when Tree did n't eat it , she utilized her job in the hospital to frame Tombs for Tree 's murder . Lori confesses she was jealous that Dr. Butler had shown interest in Tree over her before the two fight . Tree manages to stuff the cupcake into Lori 's mouth before kicking her out of a window , sending her falling to her death . </P>
who kills the main character in happy death day
who kills the main character in happy death day
Lori
Lori