Helicoptering in charitiable celebrities is always going to be problematic, and the same happens when Bono/Madonna/Angelina visit, with the press following them -- what happens when they leave, was their visit necessary/helpful/going to make a difference.
I think SH's urge to feed the baby was spontaneous and unrehearsed, and she later talks about her grandmother's response to feed another woman's child.
Agree with Tik that it doesn't solve the root problem, namely why can't the mother feed her baby and addressing these reasons.
But, the word, 'wet nurse' wasn' mentioned once, and for the Daily Mail, surely this is a step forward?