The strip poker game hadn’t gone well for her, she was out of options so she decided to put her ass on the line, literally!
With the new “dedicated service” laws in place, anyone could put them selves up for ownership as long as they did so willingly and she had an unbeatable hand so there was no risk.
Well that’s what she had though until the river came and took away any further thoughts she might have beyond simple obedience.
