You're probably correct, this reflection definitely looks odd. But something to consider is that the mirror is likely leaning back, and depending on your angle to it it may not show you whats directly in front of it but show things further out in way that could explain the weirdness.
Look at the path. It goes directly to the base of the mirror from the 'other' side, but you can't see it at all on 'this' side. You're not telling me that's not edited. Even if there's some optical illusion shit going on and the mirror is actually leaning back much more than it appears, this would still imply that the path goes directly towards some random wall and then just ends, or at least makes a very sharp turn, at most 0.5 meter in front of it? Why would it do that?
Also look at the mismatch between the lovely country looking cottage and the rusty corrugated fence. I'm betting it was edited because whatever was in the reflection didn't look very nice and would've made the mirror look awful.
You could say it would... reflect badly on the mirror.