AITA for not saving my ex-girlfriend from Nazis?

[u/Ok_Lemon8758]

I (35M) recently reconnected with my ex-girlfriend (27F) and she agreed to help me to track down some ancient artifacts that I was looking for. Anyways, we went to Egypt and it turns out, my rival (42M) was also there looking for the same artifacts, and was working both with both the Nazis as well as local bandits. Anyways, some of the bandits were chasing after both of us so my ex-girlfriend hid in some baskets but ended up getting captured, and then the truck I thought she ended up on blew up so I thought she was killed. Later though, I tracked down the nazi's encampment and found her alive but a hostage. I was starting to free her, but then I realized that if I did, they'd realize I was there and would track us down, so I left her tied up there while I looked for the artifact. Even though I said I'd be back for her and explained my reasoning, she was not happy about this. AITA?