It is true that your wife can get up hole permit in Sweden because of the connection to you as is her husband. However, it must poison the target is recorded both in Thailand and in Sweden to the Swedish Migration Board shall consider it seriously .
Your wife will have a 2-year residence permit for the first time that you then extends to a permanent residence permit . The application makes your wife at the Swedish Embassy in Bangkok where she can do her interview . The papers are then sent to the Migration Board in Sweden where you get a written interview .
The processing time from the submission of the application is now about 6 months. Can you talk for you and your wife so can the processing time is shortened considerably