Maybe they havent even had time to open the parcel Daffy? I know I am not always home so often someone in my house will sign for my parcel and I dont actually get to open and enjoy the pony parcel [if my mum hasnt decided to open it for me] for a few days.
Lets use this as a shout out to your partner to let us know if she did indeed get your box or if it was signed for by someone else.