Thanks very much Reinhard!
I also ended up ordering the Crawfurd. Only Vol. 2; maybe I'll splash out on Vol.1 some other time. It hasn't arrived yet, so very nice to be able to read this in advance.

I'm glad I took the time to ask about this version. In this one, the squire is an unredeemably bad sort. The words make it clear that his marriage proposal is just a ruse to get to have his way with her. That verse "O Sir did na ye hecht to me / That I soud be your wife..." makes that unambiguous. In other versions, it's been suggested that there's an element of misunderstanding, or that the milkmaid is naive.

There are some other nice details, such as the fact that the weapon she uses to kill him is his own, the "glaive" she finds hanging by his knee. (What is a "glaive" - some kind of very sharp metal glove?)

In this version, her master and mistress are clearly nothing to do with the squire or his party.

Some great phrases in there too: "my witching fair", "Wi' wrestling and pouand much" ("pouand" suggesting "pounding" to me)

The detail that the river is clear is interesting. Perhaps the suggestion that the body will be visible, either as a moral warning, or, more likely, that the milkmaid is highly unlikely to get away with it....