It could be that the woman has had a bad experience with mice before, and seeing one in the cartoon brings back that fear. Or perhaps the way the mouse is animated makes it seem really threatening.
It could be that the mouse moved in a sudden or threatening way that scared her. Or perhaps she's heard scary stories about mice and that's made her afraid.
The cartoon man might be scared of the mouse because of his inherent fear of small, scurrying creatures. Or it could be that in the cartoon's story, the mouse is depicted as a menacing character. Maybe he was just caught off guard by the sudden appearance of the mouse.
The cartoon woman might be scared because of a threatening character or a spooky environment. Who knows exactly, but those are common causes.
Maybe she saw something really creepy. That could be a monster or a spooky shadow.
Maybe she saw something really terrifying like a big monster.
The woman might be scared in the black cartoon because of a scary-looking character or a mysterious and threatening situation that emerged.
It could be that she's pointing at a book that scared her or maybe she's showing someone where a strange noise is coming from. There are all kinds of possibilities!
Maybe she had a bad dream or heard a strange noise outside.
Maybe the mouse looks really scary or she had a bad experience with mice before.
The comic woman might be scared because of a sudden twist in the story or a lurking unknown threat. Maybe it's related to a past trauma or a new challenge she's not prepared for.