Cover her in catnip and cat treats and make her lie on the floor
Only joking.
If she is a cat lover and talks and plays with them then i am sure they will all be just fine.
The cats will probably make their own introductions or behave exactly like a cat does and become aloof and seemingly non caring.
Personally I wouldnt worry too much as long as you trust this person to look after the cats, the cats will look after themselves.