what does "play Easter Bunny in a few"mean?
“Really. And now I have to burn it out of my memory. Come on, Barbie. Let’s take Sadie for a walk.”
But Sadie sprawled out again, yawned hugely.
“I’d say Sadie’s taking a pass,” Tricia observed.
“Fine. Just you and me, Barbie. We’ll be back to play Easter Bunny in a few.”

Question

what does "play Easter Bunny in a few"mean?
“Really. And now I have to burn it out of my memory. Come on, Barbie. Let’s take Sadie for a walk.” 
But Sadie sprawled out again, yawned hugely. 
“I’d say Sadie’s taking a pass,” Tricia observed. 
“Fine. Just you and me, Barbie. We’ll be back to play Easter Bunny in a few.”

Answer

I'm not sure what the reference to Easter Bunny is (I'd need to read a lot more), but "in a few" means a short while: in a few minutes, in a few moments... maybe even in a few hours, if the context suggests it.

Answer

Is it Easter time? If so - it could just mean that they were going to give out Easter Eggs.