I have read all over the internet including on this website about losing Shadowmere. Apparently if Shadowmere dies she will re-spawn in that spot in 14 days. However way more than 14 in-game days have passed and I am not sure where she would have died if she did die (I don't recall her dying). Would she not come find me if she did die and she re-spawned?
I thought she would return to the Dark Brotherhood sanctuary but so far no luck. Any other tips on finding her? I am just traveling to random locations looking for her at this point.