Thanks Faye I went to Klong Toei and did the application this morning. Correct for 3500B you can collect the same day, but, you have to go to Chang Wattana.
She had a Thai passport but it is expired. I have only 1 week left to do this so my anxiety is the time restraint in case I can't complete the process in time.
Does anybody know if the Thai passport issuing service is available right now at the Klong Toei office or am I looking at another trek out to Chang Wattana?
I have this letter of mothers consent and it is stamped at the district office in Bangkok. The thing is she doesn't have an entry stamp on her UK passport as she was born in Bangkok and never left