I can't say very much good for her. Going back to when she was Education Secretary and ended free milk in schools. That's about as cold as you can get. Sure, she protected the Falklands and that was a good thing, but you weigh one good thing against hundreds of other horrible things. I have no doubts that Callaghan, Foot, Kinnock, Jenkins, Owen and Steel ALL would have been (in Callaghan's case were) better than she was.
In 1968, the Labour government abolished school milk for secondary schools, so, this isn't just a 'spiteful Tory' issue.
Though, she abolished them for kids aged 7-11, not for teens. So on the "spiteful" scale, she scores a bit higher.