New Puppy - sleeping

Question
I have a 31/2 month old Poo-Pom.  We brought her home at 6 weeks old.  We were very surprised as she took to her crate immediately and was sleeping soundly in it her second night with us.  She loves the crate and seeks it out when she's ready for a nap, and runs for it when I leave for work in the morning.  In other words, it would appear that she has accepted her crate as a place of refuge.  The problem is, she does not seem to want to sleep in the crate at night.  When we place her in there at our bedtime, she spends a lot of time howling, etc. and seems to wake very early in the A.M. as though she is just not sleeping well.  Any ideas on why the adverse reaction to the crate at nighttime?
Second question is housetraining.  Urinating accidents are becoming few and far between.  However, we are noticing that she runs quickly upstairs in our hallway.  This tells me that she knows she has to go, and is choosing a place to go, how to I get her to tell me she has to go?

Hoping you can help me!!!!

Answer
The night time crate problem is puzzling.  Perhaps she accepts it when you are away at work knowing you aren't around, but at night, knows you are close, and want to be with you.  Perhaps the technique I have found works well with new puppies would settle her down for the night.  At bed time, with a new puppy, I have found lying down in front of the crate like you were going to sleep and speaking softly to it, or singing, until it settles down and goes to sleep works very well.  Follow the pattern, a period of active play, outside to eliminate, and then into the crate.  It may work to settle her in the middle of the night too.  

It is clear she understands she needs to leave the area before a bowel movement.  She just needs to learn where to go.  Try blocking the steps with a gate or something, even a board.  Then when you see her circling around it, take her out.  Keep her moving unless she is sniffing around.  That will stimulate her until she can't hold it any longer.  Then praise her.  If she likes it outside, let her play around a little rather than ''punishing'' her by taking her in too soon.  

These are uncommon problems I don't have experience solving.  If my ideas don't work, post back with what happened, and maybe that will give me a clue for what will work.