While I'll agree on a certain level, ultimately it's up to a grower to ensure they have the right people in place and knowing that things will be done (correctly) in their absence. I've been in the same boat. My wife has severe epilepsy and cognitive memory problems, so I can't blame her when she forgets to do things. It's easy to complain or assign blame about something you ask from others, but don't set yourself up for failure, or bitter disappointment, because you've got to rely upon others... Be more independent. Possibly look at automated watering system, if you cannot do it yourself. It wouldn't be that much to figure out, and ebay drip pumps and timers can be had for little of nothing.
As with everything, there's a balance to things, so try and chalk this one up as a lesson learned, without hopefully, it ending in dispute or bad feelings with the person in question, and accept your own responsibility in this endeavor also.
All I'm saying is don't put false hopes in people. Make them prove themselves worthy to take care of these things, otherwise your just asking for things to get messed up, because others are essentially clueless to the problems at hand. They think it's like a "normal" plant with regular dirt that only needs watering every couple days....
