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I respect that too. But as you say she's getting old and it's a lot of work.... Perhaps she should devote part of the garden to marketing it and the other part to this beautiful endeavour of offering it for free. She could even think about turning it into a classroom for children, so that they can learn about botany and flowers in general.

It is in the middle of nowhere and there's no one around, which makes it difficult to do much. She is also old, and is not at all interested in creating a commercial venture. I think a lot of the issues is that she can't maintain it physically and has other more important issues to face.