Which Alice?

The White Knight Couldn't Quite Remember
third defendant had said, but today I unfortunately cannot remember
which question he asked me. Anyhow, whichever question he
asked me, I knew the answer at the time and told him. Still,
Tweedledum was unable to solve the case."
"This gets more intriguing by the minute," replied Alice. "So now
I have enough information to solve the case?"
"Oh, no," replied the Knight, "I must yet tell you more.
"Well," he continued, "only last week I met Humpty Dumpty and
told him everything I've told you so far. I told him all about the
Jabberwocky solving the case and all about the fact that neither
Tweedledee nor Tweedledum could solve it, even with the added
information they had. Humpty Dumpty immediately took out his
pencil and notebook and worked on it quite a while. Finally, he
shook his head and said, 'I don't have enough data! If only you
could remember whether it was the second defendant or the third
defendant whom Tweedledum inquired about, then I might be able
to solve it—but even then, I'm not sure that I could.' Well,
fortunately, I did remember at the time, and I told Humpty Dumpty
which of the two defendants Tweedledum inquired about. I didn't
tell Humpty Dumpty what that defendant said, because I didn't
remember at the time, but I did tell him which defendant it was.
From this, Humpty Dumpty was able to solve the case.
"And now," concluded the White Knight, "I have given you
enough information for you to solve the case."
"Alice could really solve this case?" asked Alice in astonishment.
"Yes, she could," I replied, "and so can you. Only it involves a
good deal of concentration!" Who was guilty?
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