The Glen Junction restaurant is great- coming from SL, take a right at the light, it's right there. It's a little crowded in there, but the food was awesome, very family friendly. (Plus they have a playroom upstairs to use while waiting your turn for a table.)
A heads up if you've never been, too- SL has a policy if it rains heavily (I think more than a 1/2 hour), you can get tickets to go back another day. We were there last week, and now have passes to return another day too.
There is an alpine slide just up the road from SL at Attitash, your DD could ride with one of you. (You do have to take a chair lift up though, so judge if you're ok with that!

Get their EARLY though, or later in the afternoon. Midday lines are awful! They also have a couple small waterslides intended for the under 10 crowd.
Be forewarned too, traffic getting out of SL at closing, esp towards Conway, is TERRIBLE. Either leave early, or plan to hang out in the parking lot a bit.