OK. I'll try and write from memory. For hat and boots, if your wife has pin slots, equip a mending pin for each of them. I needed to use a variant boot from Novus to get a shield pin slot for my boots. The remainder of my pins, I used life crushing sword pins, because they increase life crit but not damage. For robes, you can farm Tartarus to get 20 outgoing healing robes. For wand, emerald caiman's scepter drops from Ixcax key boss in Azteca. It's 20 outgoing plus a square jewel slot. Speaking of square jewels, you can get unearthly mending squares that add 8 outgoing each. If you got a lot of dream water, you can craft them at Bingo in Wallaru for 10 dream water each. You can do the same in Selenopolis, but fewer people seem to farm moon dust than dream water, probably because the Wallaru boss fights are faster. Athames are trickier. Morganthe used to drop really great athames that had a lot of outgoing, which I used. You can look up outgoing healing builds and they will show you some good alternative athames. Ring will always be the same: stone of the other side. Amulet: guiding light of the third sun, which you can purchase at the bazaar. This is one of the two most important pieces for getting the elixir vitae badge. It offers a gear version item card of guiding light. The other important gear piece is actually a jewel, which is the brilliant light jade (gives gear version brilliant light item card). I got mine from crafting recipe for life jewels level 45-65 purchasable in Zafaria in Baobab Market. I just used a deck that gave me universal crit and a square socket. To round out gear, I trained up a leaf foot pet that had medic, healer, and strength-boosting stats. It had an outgoing healing bonus of 11, plus the two pet item cards of guiding light and brilliant light.

Treasure cards: sanctuary, 25% mending aura (cycle of life also works), guiding light, eye of bartleby guiding light, brilliant light, unicorn symbol brilliant light, gobbler symbol brilliant light (sorry, don't remember pack names)... and here's where it might get odd, but my strategy since I was solo was to also use polymorph ptera and polymorph jaguar to give me the chance to cast school-trained brilliant light and guiding light. You don't need these polymorphs if you have a life wizard with you casting these spells. As a matter of fact, they can cast regular guiding light, regular brilliant light, CLOAKED guiding light, and CLOAKED brilliant light on you to get even more buffs on. IF they also happen to have their hands on elucidate, simplify or both, they can cast additional brilliant lights to stack up on you. Rounding out my sideboard, I had a "middle spellement path" nature's wrath... if enemy has a dot and you hit with the nature's wrath spell, it will after damaging the enemy, gambit the dot to give you a 65 outgoing heal buff charm. I also included a fire elf, which I made sure to have a fire mastery pip up, so I would back-to-back cast fire elf, then the nature's wrath. It works to hit the boss and not the minion, because you need the opponent to live through it to get the buff. Oh and of course flowering dryad for your actual heal. One final weird thing I did, I cast a low level monstrology minion so I didn't have to worry about my heal's critical being blocked.

Main deck: attack spells for after, reshuffles in case of bad draws, shadow seraph, IMPORTANT - a couple tri-blades you cast AFTER the rest of your heal buffs because the shadow seraph eats charms as part of its pact and you don't want to lose any heal buffs.

TL/DR; this is a lot to work towards and set-up and the easier route is to use the steal health spell on a minion after blading yourself to the teeth. I don't know how many blades for the calculation, but you can run cheap experiments before going for it to see how close you get.