Not doing so will trap fungus, not allow nutrients to get to the roots, and not allow the grass to breath. 

Just fill a reservoir, add some nutrients and hand water plants every 2-3 days.

Even a small vineyard requires quite a bit of labor during the growing season (training vines during early stages, pruning, spraying fungicides or foliar nutrients, maintaining the row cover crops/mulch, fixing irrigation leaks, harvesting, et cetera).

Given their resilience to weather, foreclosure and inadequate nutrients, do I have a shot of keeping them alive in a different environment? 

I’m already committed, but it’s nice to get the extra nutrients from BP!

She wants to sell the property with her house on it there too but if the house sells first then the homestead on the properties goes away with that option too..She is not doing excellently health and mobility wise lately, including upcoming surgeries, new diabetes, and nutrient deficiencies.

You don't want someone using the nutrients in your soil, but not doing the correct things to make sure they are put back in to the soil for next year. 

A good steward of the land knows how to profit from it sustainably by maintaining soil health and nutrient balance, and healthy and productive land is valuable. 

It does not have a vascular system and absorbs nutrients through its leaves.Moss has no roots.

You can tell them all you want about the benefits and nutrients... they don't like it period.