For starters, don't play fallout 4.
But if you really can't be persuaded otherwise, I'd say low strength, perception, and agility, high endurance and charisma, and intelligence and luck somewhere in between.
Since Emmy isn't a combat unit by nature, probably a good idea to focus on stealth and non-violent confrontation, along with "tidying" the wasteland. Scrounge every goddamn bottlecap.
Try to invest points into charisma to get to the point you can pacify and turn enemies to your side. Maybe try and get some weapon and armor upgrading perks.
Don't get bloody mess.
Get Codsworth, Curie, Nick, or Strong as companions. Codsworth, Curie, and Nick speak for themselves. Strong because a kind-hearted robo maid and her violent supermutant body guard going on wasteland adventures sounds like a jolly good time to me.