Longer answer: my strategy is a VitaMix, baby! She will get almost any fruit down if we freeze it in chunks and throw it frozen into the VitaMix (with a little liquid of some type to goose it with) and hit HI. It turns into all-fruit soft-serve, and she will eat 2 twelve-ounce glasses of this stuff. We sometimes add a glug of local unfiltered honey. Last night's batch was strawberries, apple, melon (some kind of heirloom canteloupe), bananas, and mandarine oranges in juice as the goose. The stuff turned pastel salmon pink and I had to make two batches to feed everybody.
If you try this, my big tip: do not VitaMix whole, peeled oranges. Too much pulp and tastes really off. Even my fruit-crazy oldest wouldn't drink the smoothies with orange. This ain't Primal, but I would first juice the oranges and then add the juice as the goose.