Why is my cat kneading and biting my cushion and cardigan?

I have a 6 1/2 month bengal who has starting kneading again. I understand the concept of this and she'd still do it routinely to get comfy but the past few days its been different. Its a lot more clawry (yes not a real word) and theres biting and its a more prolonged, slow and concentrated action. She is also purring and only does it on my sleeping cushion and cardigan both of which she buries her face in and has a good sniff. Im not sure how to take this, does she feel unloved, is she mad at me about something? In between this its like we're joined at the hip, so im a bit confused.