I suspect she's just happy to have a home with you.
At a year and a half old, I'm sure she's large enough for you to see her (I trip over puppies a lot). When she's blocking your way, just stop and say "doggie move" in a calm voice. If she doesn't get out of your way, try to gently guide her out of your path. You will have to repeat this a couple of dozen times before she gets it, probably.
Balto is always in my way as I move around in the morning doing usually morning stuff, and this morning I've had to tell him to move 3 times already.