Hannah stabs a drunk and has her face and chest speckled in blood. She runs away to her room, but as she walks the hallway to her room as well as once she is in her room, the blood is no longer on her.
The Time Team talks about traveling to Hartfordshire in 1491 as going to the Middle Ages. The Renaissance is considered to have started in the 14th century and lasted until the 17th century. Even an abbreviated Renaissance period would have encompassed the 15th and 16th centuries. Therefore, the intrepid time travelers went to the Renaissance, not the Middle Ages.