''Will they need us? We don't really know,'' she says.
Te Puke's counter services are unusual in that they are standalone - most Post Shops are part of other businesses - which might also be a factor. Post shops in pharmacies, for example, were closed under level 4.
''Maybe because we are a standalone postal service, it would be easier for us to open,'' says Karen.
''But we've got to consider how we do that - we've got a very small staff. We are not talking about people sending off a letter or card, but it is about servicing the business sector.''
Karen says staff could work in two independent teams as a safety measure.
''But we really need to know if the demand is there.''
In February the trust launched a campaign aimed at raising funds for the next phase of the project.
Karen says the overall project is in a holding pattern and while it is important to get revenue coming in through the postal services, ''at the same time we don't want to do that and risk staff and customers unnecessarily''.
''I think there are a lot of people who are still reliant and who are still a bit stressed about being in arrears or not able to pay their bills.''
Many of them are older people who are either unable or unwilling to pay bills online - which was one of the reasons the trust took over postal services.
''But [if we do open] then it's about keeping those older people safe if they do come to the post office.''