Davis wasn’t even aware of Anna’s blood mixing with his blood and that he had changed a bit that night, as he also thought that Anna was also human-like himself. Because of the blood, his memory had increased and his metabolism had also improved that now both Anna and Davis were improving at the same rate, well that is what everyone saw and thought that the genes in their body as well.
Unknowing to everyone, Anna was on a different level altogether and she was absorbing and comprehending everything faster than even a sponge can absorb water and a computer can analyze data. Anna would help explain things to Davis that he didn’t understand when their lecturer wasn’t around as now they were doing many degrees at the same time. Even if their lecturer was around Anna would ask a question to help Davis to understand so that the lecturer wouldn’t know that he didn’t understand.