The Clock is Ticking, Get to Work.

Do you expect a toddler to ask questions that would task even the most learned scholar would have a hard time answering? I sure don't! And I certainly didn't expect such a question in the car today.
Eric had to go to the doctor's office this evening, so I went there and picked up Lauren to take her home. On the way, we had our usual conversations and song singing. Again, as usual, she expressed that we were going to see Sheba when we got home? That's when she whipped out the big guns.
Lauren: "Daddy, where's Lizzy?"
Me: "Um ... Lizzy died sweetie", I said confused because she's gotten this part of the topic as far as I knew.
L: "Is Lizzy at the dentist?"
M: "No sweetie ... she died."
L: "But where is Lizzy?"
M: "She's in doggie heaven."
L: "Can we go to heaven and get her?"

Here's where I just had to stop. I completely understood her thinking and could not figure out a way to placate the curiosity. She knew I took Lizzy to the doctor's and she also knew people don't stay at the doctor's, so Lizzy had to be somewhere. Lauren wanted to know where that somewhere was and how do we get there. What is a parent to do at this point? I did what I thought best: stall.

Me: "Honey, you're going to have to give daddy a bit on that one. If you still want to know tomorrow, you can ask me then."

Now ... please help. I need to know an answer in 18 hours. Better get on that, the clock is ticking.