im glad that she is settling in with you.
ive heard that the dog you bring home, turns into a different dog. roughly, mine have been about a 2 month settle in period before we see how they 'fit' into our family 2 and 4 legged members plus copious amounts of visiting teenagers and relatives.
eg. 8 months into owning our pup, we have my daughters acting troup here doing a play rehearsal yesterday, god help me!, singling, loud etc. Pohm decided that this was just not on, and they should all get the heck out. Growling, stalking, staring them down. She got booted out for this, whilst nice mannered dog got to stay indoors. We let her in and she started again, she got thrown out again, for good this time. She was not allowed back into the house till they'd left. Jealousy? Resource gaurding? who knows, what i saw was bad manners = OUT.
Already your bitch has left her hackles down, happy to see you, linking you with lovely good things.
The aggro, whatever is its anticedent, will go if not re-inforced.
it all sounds good.