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She's weaving or knitting a quilt - she says she will marry when it is finished. I think it illustrates her intelligence and perseverance. She's confident her husband will arrive, so this provides some stalling time.
She knows that she, her son, and her home are vulnerable - a suitor could just force her to marry him. She also wants to protect her son; if she is forced to marry someone, he will likely kill her son to ensure his own safety.
i agree with lengal46, she knitted a quilt and she only agrreed to the marriage because she was protecting her sons.