Work experience year 11 - should they write cover letter to the standard you and I will do?

[Vanillachocolate]

DD, 15 did work shadowing in a big company last year and enjoyed it very much, in spite of the nerves. She liked the atmosphere, adored the people, she found the work interesting. They showed her some software they use and what they do and she could do it, found it interesting and would like to learn more and to do some more of it. She put enormous amount of time in learning after school the skills they showed her. She could see it to be a career for her. That's about it (after intense two weeks of mocks, she was falling asleep in front of her screen ).

Would this do?

Should she research more and about the industry and basically to write a letter closer to what I would write applying for jobs?

Any advice, please.

Is it for similar companies?
If it's for the same industry and companies then yes, why should her standards be any lower

The standards should not be lower, but versus what?

When I was 16, I wasn't able to write the same cover letter than I could now. Now I have the benefit of education, work experience and some life experience that informs my ideas of why I am the best for the job. I don't mean qualifications, although they matter, but the understanding that I developed in the course of my life.

Can we really expect the same from a 16 years old?

I would think a work experience letter should be something like this:

para 1: introduce yourself briefly, say what you are looking for
para 2: say why you are applying to them
para 3: say particular courses you are doing or extra curricula activities which may be relevant
sign off.

I would encourage her to do a CV and covering letter. And help her to get it to the highest standard she can.
My school were rubbish at teaching us how to do CVs/covering letters and my parents never helped me, it genuinely took many years for me to perfect it and it did impact my job opportunities.
Your DD sounds enthusiastic and like the has found something she loves so I would be really encouraging it. Help her plan a letter, let her go and type it up and make a CV, then help her edit it and show her how to make it really good. It probably doesn't need to be perhaps as 'intense' as you would write if going for an actual job but should explain who she is, her interest in the industry, why she loved the experience previously, relevant experience and long term/why she wants to go back. Then attach a CV with all her extracurricular/experience to date (I doubt it will be that long at 15 and they wouldn't expect it to be! They will be most interested in relevant skills and an obvious interest and motivation to do more)
I'm not saying do it for her but help her make it a high standard and give her the best chances of getting more experience.
Good luck to your DD!

Was the first work experience through the school? Will you have any issues with her age/insurance?

In any case I would also suggest she is ready for multiple applications, and that she is prepared for rejection after she puts in all the effort.