Sorry about your poor horse. Our experience is only with multiple cats and we always desperately try and make suitable decisions about treatment etc based on what’s right for our family member rather than ourselves (and our emotions) often resorting to the honest view of our vets - it is never ever easy. I think you are right in delaying decisions re Tarka (despite my obvious bias towards a Plus Four) for a few more weeks even months. Best wishes to both you and Caroline HB
Plus Four Bentley Velvet Red “Grandi P” Golf ehybrid thingy “Toadie” Polestar 4 “Vger”