If you're going to pull her thumb out, be prepared to offer up a different way for her to be soothed - rocking her, or rubbing back, etc. Personally, I wouldn't bother. Teeth aren't even an issue with thumb sucking until after age 4, and even that's debatable.
Babies need to suck - not just for feeding but for self soothing. Many babies without soothers or thumb will keep sucking at the breast longer than it takes to be fed - because they need the soothing.
As for hereditary - not sure on that. My brother sucked his thumb (straight teeth) and neither of my parents did, nor did his kids.
My nephew showed up on his ultrasound picture as sucking his thumb in the womb. Seems easier than a soother (I remember trying to find a lost soother in the middle of the night, or worse, they'd be lying on it and wake up).
I can see why you'd be concerned (where you had teeth concerns) but at this stage of the game, I'd be more into her feeling secure and content :)
Good luck