In this porn comic Vampires of the Night 4 created by the artist Palcomix we can see how the heroine girl who became a vampire is going to visit her little sister while she sleeps to turn her into another vampire in the same way they turned her.
One full moon night the heroine who had previously become a vampire slipped into her little sister’s room, entering through the flying window turned into a bat and when she entered the room she returned to her vampire form so she could bite her sister and turn her into a vampire but her mother entered the room just when she was going to bite her so she had to hide so she wouldn’t see her and thus not suspect anything.
The mother when she entered the room saw that the window was open and went to the window to close it because it was very cold in the room, then left the room and closed the door, then the vampire approached her sister to bite her but when he saw her he kept thinking and decided that he wanted to fuck her so he bit her on the left leg and the sister woke up and told him why he had bitten her but immediately noticed how her body changed and experienced a very strong feeling of excitement and He told the sister that he wanted to fuck her and they ended up fucking.