[cypher]

I don't see any harm in putting seeds in from day one tbh, at least they begin to associate your presence with something yummy even before you begin to interact with them.
It's so early I wouldn't worry about her settling in, it sounds as though she's trying to make a nest in the substrate below her house, with two Chinese in the house I get that scratching under the house/shelf or wherever they happen to be sleeping a lot, my Russians do use tissue for a nest mostly but she may just be happy with the substrate or not used to having anything nice like tissue yet.