Visible crew/equipment: After the hairy beast Dracula attacks Sadie Frost, Winona Ryder comes to get Sadie in the garden maze. While they're walking back, you can see the camera's shadow on Winona's back. (00:43:35)
Visible crew/equipment: When Dracula is going to enter Lucy's bedroom for the last time, an unseen force knocks Cary Elwes backwards. Upon careful inspection, you can see a wire or cable pull him back. (01:19:30)
Answer: It's unlikely they were falling in love with Harker: they are sadistic, baby-eating monsters who regarded Harker as food and a temporary plaything. As for them sleeping in the open, the local populace dreads and avoids Dracula's castle, so there's hardly any fear of intruders. Van Helsing did enter and kill them, but they reckoned, mistakenly, that he too would be too afraid to do so, especially after their horse-mauling escapades the previous night.
Jukka Nurmi