Three people helping with one dog's medicine creates a specific failure mode: not neglect, but kindness twice. One adult gives the morning serving, says nothing because the teenager is still asleep, and the second adult, finding no mark anywhere, gives it again an hour later. The defence is not trust or memory; it is one shared record, kept in one place, designed so that a serving already given is impossible to miss and a serving not yet given is equally obvious.
The Fields on Every Line
Build the record as one line per serving, with the same fields in the same order every time. First, the medicine, named exactly as its label names it, so nobody works from a nickname or a description of the container. Second, the serving due and its time window, written as the household's agreed window, such as with breakfast or before the evening walk. Third, the giver's initials, entered only by the person who actually gave it. Fourth, the actual time given, written at the moment of giving rather than reconstructed at bedtime. Fifth, a note field for anything unusual: a serving missed, refused, or spat out, recorded in plain words on the same line.
Those five fields are the whole system. A line with initials and a time is closed, and nobody reopens it. A line with neither is open, and the next person to the record owns it. There is no third state, and that absence is what protects her in a house where care passes between two adults and a teenager with different schedules, phones, and mornings.
The Record in Use
A day on the record might read: medicine, joint tablets, morning serving due with breakfast, giver's initials A.R., actual time given 7:05 a.m., note, taken in food without fuss. Evening line: joint tablets, serving due before the evening walk, giver's initials J.R., actual time given 6:40 p.m., note, none. The teenager's weekend line reads in the same fields: joint tablets, serving due with breakfast, giver's initials T.R., actual time given 8:10 a.m., note, none, because the record does not care whose hand gave the serving, only that one hand did and marked it at once.
The teenager's role deserves one explicit household rule: giving a serving is a real responsibility with the same standard as any adult's, meaning initials go on immediately and uncertainty gets voiced, never solved silently. If the teenager cannot tell whether a serving was given, the answer is to check the record and ask, never to give it just in case.
Where It Lives and What Never Happens
Keep the record with the medicine itself, in the same box or on the same shelf, so the person holding the container is looking at the record in the same moment. A record kept in another room will be consulted from memory, which is the failure the system exists to prevent. If a serving is missed, note it on its line with the time it was discovered, and leave the line honest; a missed serving is never doubled at the next one to catch up, and any question about what to do after a miss goes to the vet who prescribed the medicine. Weekly, one adult reads the record end to end, checking for blank lines and unexplained gaps while they can still be explained. Duties shared through Care Teams on KinsLe add a second lock on the same door, since a serving given by any of the three shows its completion time to the other two at a glance.