Sophie Kate was a nervous pooper also, it took some work so she was comfortable in the crate. Now I can leave for about 4 - 6 hours in the crate and she is fine but she is 5 years old (I never leave her longer, she may be able to stay and hold her functions longer). You are doing the right thing by limiting her crate space.
13 weeks is pretty young, you need to learn her schedule and keep her on that schedule, this is if she even knows her schedule. Good practice for me was to start taking her out about 30 mininutes after she eats and continue every 30 minutes until she went.
I went in the wrong direction with thinking that at Sophie Kate would tell me when she had to go, she didn't - I was setting expectations for her that she did not understand.
Final word from me, potty training for me was frustrating, keep trying every bit of advice you get (that is what I did and finally mastered it)
__________________ Cheryl,Mom to  SophieKate |