Text formatting has to be considered in context of the publication first. In this instance, all caps are used for "HER" to indicate italics. If italics or bold fonts are not available to the publisher's methods, all caps is used. You can see here in an alternate publication where italics is available to the publisher.
The Reason for the CAPS
In this exchange, there is a difference of opinion between the mother, Mrs. Dashwood, and the practical and prudent eldest daughter, Elinor, of which belongings they keep or dispose. The italics emphasizes a contrast to the previous sentence, "...the discretion of Elinor prevailed." But, if it had been up to Mrs. Dashwood, SHE would have done it differently.
The actual parsing of that sentence is difficult for me to explain in long hand.
You're correct that "two maids and a man" is the subject. The predicate would be "were speedily provided." You also have the subject "they." The two subjects are connected by the prepositional phrase "with whom"; two subjects with the same verb.
I recommend this web based parsing app that will take short sentences and parse them with great explanations. I typed in an abbreviated form of the sentence and got this parsing (lots of fun):
"Two maids and a man, with whom they were speedily provided from those at Norland."