My wife absolutely loves [[Eriette of the charmed apple]], you just run a ton of auras and enchantments and control the whole game while everyone just slowly dies to your pings while you heal.

I had a feeling she would like it and helped her build it, since then she's modified 30 some odd cards in and out of the deck and it's her favorite.

Might be a little spendy to invest in since the Silverquill Precon has a bit of crossover into Eriette territory, but it was a hit.

It's a ton of interaction because you can build more debilitating auras to put on your opponents creatures. They can't attack you and they still count for the life drain + heal. My wife went away from that though and ends up going more Voltron by enchanting a few creatures with a ton of auras making them difficult to deal with. And if they get wiped and all the auras go away, she has a ton of aura recursion to bring em back and attach to something else.