@Nikki *********
> But I used to get my extension in Krabi and they asked me to have the money in my bank for 60 days.
There is no official seasoning requriements. If the immigration office wants you to show the money seasoned, ask to see the police order.
>Also is it a dependent visa that I'd be on?
No. You will be on a One Year Extension of Stay Based on Raising Half-Thai Child.
A VISA is (almost always) a sticker that is placed in your passport by a consulate office OUTSIDE of Thailand. GENERALLY, they let you stay in Thailand for either 60 days (for tourism), 90 days (For Non-O and Non-B) or one year (Non-OA). These can be sold as single entry, or multiple entry. A single entry visa is 2K THB (or local currency) and a multiple entry visa is 5K THB (or local currency).
An EXTENSION OF STAY is a stamp that is placed inside your passport by an immigration office. An EXTENSION OF STAY IS ALWAYS "Single entry" (since you're inside Thailand). ALL Extension of stays are 1,900 THB