Sarah and the vampire dog

(In this story, vampire, werewolfs and all that halloween junk is real)
Sarah was very afraid of everything. Every night Sarah had to sleep in her mom and dads room because she was so scared. One night Sarahs mom said to Sarahs dad, "Sarah has to stop waking up in the night, she's waking me up and I cant be tired when I go to work." The dad agreed. The next day Sarahs mom and dad left Sarah with a babysitter, when they came home they brought a adult black lab named Lincon to sleep  under her bed at night. Then Sarah, Lincon, and the dad, and mom went to sleep.
 It was the middle of night when Sarah woke up, she got scared but she didnt want to go into her parents room. So she put her hand under the bed and felt a tonge lick her hand, she was so scared she didnt even feel that it was  cold and dry. She fell back asleep when she woke up again, she looked at the clock it was 8am on a Saturday morning, her parents were at work and the babysitter was probably down stairs. Then Sarah heard a "drip, drip, drip" and then had to go to the washroom. Sarah walked into the bathroom and saw Lincon, hung on the hook of the door. On the bathroom mirror, writin in blood was "Dont always believe what is under your bed at night.