I sent LTC to an old DOGE wallet?

I dont even know if this is possible but…

In 2015 I bought like 35k dogecoin to be edgy, sold them about a month after purchasing but had the wallet.dat file saved on a usb drive. A couple weeks back I redownloaded the dogecoin wallet to check if there was any in there (there wasn’t). But now, I’ve some how put the dogecoin wallet.dat into the my litecoins one and the trasnaction history (for the DOGE) is there. The problem is I deposisted my litecoin into it recently and I have no idea what the passphrase is. Will it be the one from the dogecoin wallet?(which I can’t remember) and I’m pretty sure I didnt set one up when I downloaded the wallet. Any help appreciated. Its only 1 LTC but its just a pain in the ass. Thanks!