I'm not sure if this is something that I can change or adjust. Recently (the last week) my baby girl, sunset, has gone from my wife being her favorite to biting, not hard enough to make a mark but hard enough to hurt pretty good, when my wife tries to touch her at all. I can have her step up then hand her to my wife and she's ok and she is ok being put on her shoulder but my wife can not put her hand up to sunset without getting a hard nibble that hurts. Sunset doesn't make noise when she bites and doesn't try to move away but will not allow touch. After my wife takes her hand away sunset "talks" to her using all sorts of chirps and clicks and puts her head down like she wants scritches but as soon as my wife's hand gets close she sits up and opens her mouth if my wife gets closer sunset nips the fingers! Any help would be great!