The sitting woman at last is thin again. The baby must have been born in the interval between the 6th and 7th periods.
Everything will then start again, pregnancy appearing already in the 8th period.
In this glyph the woman has reason to look backwards, because the period of pregnancy has just finished.
Is this thin appearance in any way connected to
which I imagine marks the end of the double-month? The period of pregnancy for women is 9 months, not 2.