Yeah I have similar thoughts, I always feel like I rambled a lot looking back on interviews. My research ideas aren't completely formed either, but I think I articulated the ideas I care about pretty well, but who knows. Dr. Larson did tell me she thought my background was very interesting and unique, so I'm hoping that counts for something.
I didn't know the 10 people admitted number! That's interested, I wonder how many got interviewed too! And the info I asked at the end were when classes take place (evenings, around 4 or 5 for two hours each), how long the program typically lasts (about 3 years), and if funding was applied for separately (you fill out FASFA after you're accepted and then they offer you a funding package).
The only other school I applied to was George Washington. I'm interested in social issues with education, like gender, sexuality, race, ect. Those are not commonly researched areas so I had trouble finding schools to apply to with faculty that matched, hence only applying to 2.
What about you?