From the sounds of it, all they needed was time. The whole ritual could take a few hours to a week. The embracing could take a full day..... all depending on the individual pair.
You will not see breeding bars on the female since she is light colored. As long as she is flirt swimming, that means she is in breeding mode.
Be sure you can keep fry tanks warm. Adding warm water is not good. Fluctuations in water parameters does more harm than good. Steady pram, though not ideal, is better because your bettas wouldn't have to constantly adjust themselves to the new and changing prams. IME, breeding temps range between 26C - 30C (They are harder to breed in Lower temps than higher).