Kiddushin 13: Could Women Have Known the Halakhot?

More cases of possible kiddushin. For example, betrothal with a mat of myrtle branches - to no response by the woman who takes the mat. Is that silence a matter of acquiescence or rejection? How would she knows the details of that kind of silence? Also, what about a designated sin-offering on the woman's behalf post childbirth? What if she dies in childbirth? Plus, what about a loan where the debtor dies - and whether the creditor can always collect the loan.