tl;dr: Inform your recipient if you’re asking multiple people the same thing
FWIW I also got the same email (I think the person might have been going through a list of practicing coaches and messaging some or all of them) and I considered it rude not to be informed this is a copy-paste message they are reaching out to several people with. This would perhaps be a lesser problem for people who are following the rest of the advice, but in any case I would recommend being transparent when you’re reaching out to multiple people who are quite busy, so they can make an informed decision and perhaps coordinate who responds to you. As it is, it feels like they are thoughtlessly maximising the amount of responses they get at the expense of the recipients’ time, with an end result where most of the messages have overlapping content and are therefore wasted effort. I don’t think they did this on purpose, which is why OP and I considered it a good idea to post this PSA for other people to learn from.
Additionally, I have paying clients with similar issues, so perhaps consider offering to pay me for a session rather than asking for free coaching, or explain why that’s not an option.
Not sure why no one picks up on the fact that the list you refer to in 1.) is hard to make an edible meal from.
You mention oatmeal and cereal, but if there is no vegan milk substitute to eat with it, how is she supposed to consume it? Eat it dry, or mixed with water? Nuts and fruit are fine for a snack but I don’t think it’s unreasable to refuse to eat only nuts/fruit for a day or more. The only thing I could reasonably see in that list that could be made into a warm meal is cooking quinoa and serving with nuts and tomatoes. I could well imagine why someone might not consider it a passable meal though, eg if she didn’t like quinoa.
Seeing you consider this random list of ingredients sufficient “vegan food” makes me think you didn’t particularly consider her position.