I have just found some more documents
1. An attestation by Charles Dallas dated 16th February 1828 that he was present in November 1819 when Sir Thomas Munro visited Capt and Mrs Ward in Shrewsbury and acknowledged Jessy as his daughter, afterwards sending her a present of a bible.
2. A short account by Richard Taylor (I think a lawyer) that he attended Jessy's and James's wedding on 26th September 1833 and that Mrs Ann Ward, her former foster Mother, was well.
3. An Indenture dated 23rd September 1833 between Jessy Thomson, James Crewe and the Munro trustees authorising the continuation of her annuity of £100 a year for life to her independently of her husband. I attach a picture of page 3 of this with the signatures and seals. Ann Ward signs as a witness. it confirms that the handwriting of the letter was Jessy's, but I think the date of that letter must be earlier than I said, possibly 1832. If the family would like it I could photograph the whole Indenture but it would be easier to transmit this by an email attachment rather than the reduced quality of the RootsChat attachment.
Can we exchange emails?
Best wishes
Shankara