[AndMetal]

It looks like it's in zone/attack.cpp:

			// if spell is lifetap add hp to the caster
			if (spell_id != SPELL_UNKNOWN && IsLifetapSpell( spell_id )) {
				int healed = damage;

#ifdef EQBOTS

				// Bot Liftap Heal
				if(attacker && attacker->IsBot()) {
					healed = attacker->GetBotActSpellHealing(spell_id, healed);
				}
				else

#endif //EQBOTS

				healed = attacker->GetActSpellHealing(spell_id, healed);				
				mlog(COMBAT__DAMAGE, "Applying lifetap heal of %d to %s", healed, attacker->GetName());
				attacker->HealDamage(healed);

#ifdef EQBOTS

				if(attacker->IsBot()) {
					entity_list.MessageClose(this, true, 300, MT_Spells, "%s beams a smile at %s", attacker->GetCleanName(), this->GetCleanName() );
				}
				else

#endif //EQBOTS

				//we used to do a message to the client, but its gone now.
				// emote goes with every one ... even npcs
				entity_list.MessageClose(this, true, 300, MT_Emote, "%s beams a smile at %s", attacker->GetCleanName(), this->GetCleanName() );
			}

We should be able to add something like this to the end:

entity_list.MessageClose(this, true, 300, MT_Say, "%s says 'Ahhh, I feel much better now...", attacker->GetCleanName());

We may also have to add one for the client (attacker) casting it to see "You say" instead of "Soandso says":

attacker->Message(MT_Say, "You say 'Ahhh, I feel much better now...'");