When Jean-Claude calls Anita Blake "ma petite," it's meant as a term of endearment, reflecting his possessive and sometimes paternalistic attitude towards her. It highlights their power dynamic and his view of her as someone he needs to protect and control.
It's important to note that "ma petite" can be seen as a slightly patronizing term, especially when used by a man towards a woman. While it's not inherently disrespectful, it can imply a sense of ownership and diminished autonomy.
Ultimately, the exact meaning of "ma petite" depends on the context and the relationship between the two people involved.