An obsession is merely a hobby viewed from the perspective of someone that doesn't share the interest.
There are many unproductive "hobbies" mentioned above. Yours is productive so quit worrying about it. As long as you're not abusive to or neglectful of her because of your hobby she has nothing to complain about. Eventually she will get used to it or move on. In reality your intuitiveness and attention to detail are probably part of what attracts her to you in the first place.

__________________
1983 M-B 240D-Gone too.
1976 M-B 300D-Departed.

"Good" is the worst enemy of "Great".