Hi
Never take family members' appraisal too seriously, same as being ask: Does my bum look big in this ?
As to your picture,
Na Haruk's comments are sound. Allow me to add my thoughts.
Firstly, in photography rules are just rules and there is no reason not to cast them aside from time to time. So I agree here the placement of the tree should stay the way it is with perhaps just a minor alteration. I am saying this because the original aspect ratio looks a bit objectionable to ones inbuilt human sense of balance. (Mine at least) Yes there is such a thing. And from a picture framing point of view this format would not make a pleasing display. The darkness at the bottom and on either side of the image makes it even worse.
In real life the low level light of the setting sun would have had enough lumen to lighten up the vegetation in the foreground, albeit in a minor way. To stand there at the time when the photo was taken your eyes with its ability to process high dynamic range would have made you see a different and very exiting to look at picture. Now you take the picture and the camera can't handle it. You come home and view the photo on your monitor and where previously your eyes saw the foreground grass now there is nothing but black.
Bring back a little bit of light in PP (modern software can do this now) and your pic starts yo take on a completely different character. And where previously you where tempted to crop away some of this overpowering blackness you find it becomes less objectionable.
Nevertheless to crop a little off the bottom will, (and a little off the top) in my opinion enhances the picture if nothing else to improve the above mentioned format balance.
I submit two alternatives for consideration and let you guys decide which is more pleasing (if at all), I can't make up my mind.
Greetings
P.S.
Not sure how much you have "massaged" the image in PP and if you have make sure not to "over stimulate" the top of the tree as it shows some white halos. something to avoid.