Step 1: The part of the day, evening (word 2), must be the last word, so the time phrase last evening (4, 2) closes the sentence.
Step 2: The phrase just before it must be a place, giving at the hospital (1, 9, 8).
Step 3: The remaining words form the core statement we met her again (6, 5, 7, 3).
Step 4: Combining these in order gives we met her again at the hospital last evening.
\[ \boxed{\text{657319842}} \]