The pacing is a bit rushed, and the commander's reaction and emotions toward a total stranger who just appeared in his garden feel mechanical and forced. Slightly sub-standard for a female-MC isekai, but I'll follow for now to see how it goes...
Hideous.
A. Not a healthy reletionship on any level - the ml is basically confining her to his mension for no f reason. If that happens to you - run.
B. Just terrible writing, no plot, no point.