Unfortunately, the gifting rules as they currently exist only allow for the gifting of mundane items or items that previously belonged to the receiving character. Items that would give another character a special ability or abilities would fall under the same rulings as directly wishing to give another character those abilities, and thus be rejected.

As this wish would be granted by Myrta, there is no humiliating or detrimental side-effect for failure; the wish simply fails. Your shard total remains unchanged.