Scrip. A purse or wallet; a word of Teutonic origin. Distinguish from scrip, a writing or certificate, from the Latin word scribo, I write.
Far in a wilderness obscure. Obscure goes with mansion, not with wilderness.
And gaily pressed (him to eat).
With answering care, i.e., with sympathetic care.
A charm that lulls to sleep. Charm is here in its proper sense: that of a thing pleasing to the fancy is derivative.
A shade that follows wealth or fame. A shade = a ghost or phantom.
Swift mantling, &c. Spreading quickly over, like a cloak or mantle.
Where heaven and you reside = where you, whose only thoughts are of Heaven, reside.
Whom love has taught to stray. This use of the word "taught" for "made" or "forced," is taken from a Latin idiom, as in Virgil, "He teaches the woods to ring with the name of Amaryllis." It is stronger than "made" or "forced," and implies, as here, that she had forgotten all but the wandering life that is now hers.
He had but only me. But or only is redundant.