I used Siam Legal for the K1 for my wife in 2011. I could have done all the paperwork myself but their help was invaluable in preparing her for the interview. She knew what to expect and they practiced with her a lot (i was not in Thailand at the time). It was well worth it for peace of mind going into the interview.
Ok Thanks. Could she come into Thailand on a dependent visa before turning 22 and then stay for a year or would the dependent visa expire as soon as she turns 23?