Bigfoot Leeching

So I want to leech my mage on bf. My drk and mage are on the same acc so my questions is this: Would my mage get exp if my drk attacked it down to around 1k hp (assuming i can do so) and i logged off my drk and on my mage and killed it with the mage? If so how much exp would i get? (assume that they are both in the same party)

If a pg mule is involved, how would that work? What does the pg mule have to do to let the mage get exp by killing bf with pg?

Thanks in advance for helpful info.