That looks right, Barry. ISABELLA is listed as "to be broken up" and seems to have been renamed MARISA under St Kitts flag (c/s V4UN3, MMSI 341470000). But the plot thickens.
On 29/7 ISABELLA left her long lay-up in Cadiz (after having a PSC inspection that day) and went out to the offshore anchorage, just a little north of where she is now. Two days later - still as ISABELLA and using her Liberian call-sign and MMSI - she sailed south and transited Gibraltar Straits, making a steady 10-12kn until 1030UTC on 1/8 when she suddenly slowed to 2kn and turned back. This was about 50nm SW of Almeria and 75nm N of Melilla. It seems to be on that day that she changed to the new St Kitts identity and name.
She stayed around that position until 6/8 when she slowly headed eastward and then in a loop down to the Algerian coast off Beni Saf, still at around 2kn. Then on 9/8 she headed westwards at a stately 4-5kn. She had a very erratic course, passing Gibraltar on 11/8 and arriving back at the Cadiz anchorage the following day. She and GLOBAL DESTINY have indeed been together at anchorage since 18/8 (apart from GD's little side-trip to Gibraltar 23-24/8 - perhaps to pick up some towing gear).
But note that GD had left Point Lisas via Chaguaramas on 2/8, so was presumably diverted to deal with the apparently-sick MARISA. I have no idea where she had been heading.