Her friends would worry about her well being. And hope that she wouldn't be taken advantage of by some servant. The eldest son would inherit everything, including debts, unless another son was written into the will. But, most importantly, he got the title, if there was one to inherit. This is called primogeniture , and it applies, even if a girl is the oldest child.
Nobility refers to peers and their families.
A houswife in Elizabethan England was almost always occupied, and she almost never had a chance to relax. When she woke up in the morning, she would have to sweep and arrange the house. Then, before getting the children ready, she would milk the cows and feed the livestock. She had to prepare and make all of the food. Which includes baking and brewing when needed, and making cheese and butter when necessary.