Autograph Letter Signed with a scrawl which includes "Campbell" (I think) to an unnamed male correspondent

Two pages, 8vo, edges sunned mainly good condition. She says, "My fee for reading is highg, 50 guineas for an evening. 40 guineas if [?] for 3 or more evenings. | I don't really care about if it interferes with other work & I have not yet settled my autumn plans".