you may be better advised to steer clear of early manorial rolls until you have sorted out main thread - they can be tricky to interpret, not always up to date + miss out complete generations.
A pinfold was where stray animals were kept until the owner claimed them (and paid a fine) - sounds as if she released her straying animal (cow probably as women were usually invloved in the dairying) - check if she was down for farm of waste.
Chambers are basically buildings without a hearth(or chimney) eg shops, cottages were a legal divison of the manorial roll (as opposed to quarterlands or intack) but were dwellings, often they were let out (esp in later years and esp in towns) but you would have difficulty determining this from rolls
The cout rolls are probably extant though might not have much detail - how good is your ability to read 16th century handwriting + the odd bit of what I term 'dog' latin - the manorial rolls are all on mormon microfilm - try those years listed under Arbory as the hand in those years was quite good