Where did she stay?

Question

1. In 1968, she went to Vientiane. She stayed 1 year
   • Then she went to Ulaanbataar. She stayed 8 years
2. In 1977, she went to Wellington. she stayed 8 years
3. In 1990, she went to Stockholm. She stayed 2 years
   • Then she went to Lomé. She stayed 2 years
4. In 1994, she went to Washington D.C. She stayed 1 year
   • Then she went to Hanoi, for 2 years.

She was born in Tirana in 1950, she lived 50 happy years.

Where?

Where did she live in 1986?

When?

How long did she stay?

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Inspired by this: She went... She stayed

Answer 1

In 1986 she lived in

Muscat

She lived there for

3 years (1985-1988)

Reasoning

For each letter of the alphabet, in order, she lives in the capital city of a country beginning with that letter for a number of years equal to the number of U.S. states beginning with that letter.

For example, she was born in Tirana, Albania and lived there for 4 years because there are 4 U.S. states beginning with the letter A.
After living in Wellington, New Zealand, she would then move on to the capital city of a country beginning with O, the only one of which is Oman, and live there for 3 years because there are 3 U.S. states beginning with the letter O (Oregon, Ohio, Oklahoma).

Slight issue

I think there is a slight deviation in the question and answer because, by my reckoning she would arrive in Vientiane, Laos in 1967 (rather than 1968) but everything else fits so well that I assume this to be a typo (and anyway leads to the same answer).