She took your info on the Thai side, checked if she can do the visa for you at the Thai consulate in Laos. Got the okay, then you guys went to Laos. On the Laos side, you gave her your passport, marriage certificate, etc, all the documents, then 3 days later she gave you your passport back at said hotel with the 90 days Non-O based on marriage in it?
It depend on the office. Some immigration office you can transfer and the next day already start the process. Others, the money need to be there sitting for 2-3 months. If the money is there for 90 days, it will work in every office.