A sweet Friend wants to share a Lullaby she has written - How does one do that in this digital age?

After all, we all know about the coziness of cuddling up with the adorable ones, and relating a story or singing a Lullaby:

(www.123rf.com / photo 10427967 

I simply, in this era of e-books, do not know how best to advise my friend as regards submitting and publishing in the genre she has chosen.  My friend rightly is so proud of the Lullaby she has created and wants to share it with the world!  Nothing wrong with that!

Any advice out there will be much appreciated!