"Of course, the hour of crowning is of great historical sigifigance." Her tone is only mildly mocking now, she may not trust your motives, but she trusts the silver. "They came to my house as the sun was setting, and I gathered my things and traveled to the square, I arrived as dusk was dimming into night, but the area was well lit by lamps, and one of the supposedly noble men was asking which candle was lit at sunset. The head crowned a half hour, by the water clocks, after sunset, but labor took another 2 hours past that. I was intent on my work nd would not have noted the time so precisely but again, one of the supposed noble men called out for this to be recorded, and it did seem about right. The priest, however, declared that the birth took place after midnight, and so in the records of the church it is described as being the middle of the night on the morning of the 26th. After the child was born it took its first breath roughly two dimeters later, after the cord was cut and the child was incited to cry out."
You managed to get well over an amount that would have been appropriate- what you gave was certainly suspicious, but not by more than what the blatant gift already created, and enough to overcome such reservations. It came across as "I don't want to haggle, I know you are suspicious, and I am willing to pay a lot s that you don't care about your suspicions"