Is it permissible for the sister supervising the daily litanies to view the schedules of the other sisters and comment on them for follow-up purposes?

The basic principle regarding acts of obedience is to conceal them, unless they are performed openly, or for a legitimate purpose such as others emulating them. Therefore, there is no harm in the sister seeing the schedules of acts of obedience for follow-up and motivation, provided there is no fear of ostentation (riya'), because this falls under cooperating in righteousness and competing in goodness. However, if it leads to ostentation, then it is not permissible.