Obama sr then married a few other women (being muslim he was allowe I think 4 wives).
Now then the marriage to Obama's mother. Evidently when they got married, they went to some other town or area and NO family members attended. So, there is speculation on whether a marriage actually took place or not. Same thing with the later divorce.
If we're going to speculate, let's instead speculate that what happened was that whatever Stanley Ann knew or didn't know about other wives, Obama Sr. knew perfectly well that he had a second wife; and had picked up enough to know that a marriage in Hawaii would constitute the crime of Bigamy. So, during the term break at the university at the end of January,1961, they both go to Kenya (where multiple marriages are legal and the societal norm) where they get married on February 2, 1961.
Observe, if they aren't married, she doesn't spend a lot of money divorcing him.
She forms a relationship with Eliza (sp.?), Obama's first wife; and Sarah, one of his father's other wives; and having been kicked out by her parents, she stayed in Kenya. He returned to Hawaii to do the next school term. She was not in school at that time on the record.
She intended to return to Hawaii for the birth but got stuck in Kenya when BOAC would not permit her on the airplane because of her pregnancy (we have the testimony of the two missionaries). Obama is born in Coast Hospital in Kenya. She then returns to Honolulu.
BOAC schedules are posted on the main thread. The route home was from Nairobi to Glaskow to Vancouver BC and through Seattle to Hawaii. Going through Seattle, she stopped for the visit with Susan Blake on Mercer Island ("before she had learned to change diapers") per Ms. Blake's testimony in the You Tube video interview.