Regarding the second issue, this would seem to be similar to ??? ????? ??? ??? ???? which is ?? ??? ???? because the Torah says ????. So by an elf an actual nesinah should not be necessary as long as the elf acquires the clothes and the owner had intent. Aaaiii, Lucius Malfoy did not have intent to free Dobby. So efshar we could say that you don’t need intent to free, you just need intent to give.
Intent is not the key here. It is true that were this a matter of ????? ??? it would be invalid, but, as you have previously acknowledged, her book, her rules. And her rules state that there has to be a presentation, kabbolah, call it what you will, of an article of clothing. Therefore, handing a ??? to an elf will free it, as that is the requirement. There need be no intent.
But when there is no direct handing over of said ???, then the modus operandi of presenting the clothes is by wishing them to have it at the time they pick it up, this being another form of the master ‘presenting’. For without the master’s intent in that ????, there is no ‘presentation’ in any form.