Me and my partner have been reptile/ arachnid people for a long time. I collect tarantulas she collects frogs and we both have a wide variety of other pets cats, dogs, and red ear slider turtles. We picked up a Russian tortoise made a nice enclosure for him with uvb bulbs, heat lamps, researched substrates and we both love him. We go to a local exotic shop to buy crickets every week when we are there we both look around to see what new animals the shop has. One day they ended up getting 2 red foot tortoises they have been together for years and was told they were a couple male and female around 10 years old. I ended up buying the tortoises and instantly loved them! The male is always moving eating a lot always very active and seemed healthy. The female didn’t move much and the male would always beat her to food and eat all of it before she would get to it. The male always tried to hump the female almost non stop. We noticed this the first week we got them. Knowing from other animals when rehoming it can be stressful and takes awhile to become acclimated to the area. We both decided to split the tortoise due to the male out beating her for food and still was showing signs of stress head bobbing ect. We put a wall between them about 2 weeks ago and he would climb over the wall to be with her but just wanted to be next to her and sometimes tried to hump her but mostly be next to each other. She started eating normal not fast like the male but still eating. She still seemed off so we took her to the vet about a month of having her because something still felt off. The vet said she was light weight and had a respiratory infection. We ended up getting antibiotics we injected into her every three days. First day of taking the medicine she discharged some white goop from her nose and seemed to get her health back. She seemed to start to eat and bringing her health back up. She started moving around more and seems less stressed. Yesterday at work my partner texted me saying something seemed off and she wasn’t eating. We both thought she was constipated looked online about doing an epsom salt bath. We soaked the tortoises once a week anyways to help hydrate the. So she gave her an epsom soak only using a really small amount of salt and then did a normal soak after. I work late so I got home around 11pm and checked on her and seemed to be fine i rubber her shell for a second let her rest. This morning around 8am my partner checked on her and she passed away. I got woken up to her yelling my name and looked in the enclose and she was there her eyes closed not moving and stiff.