I am sure if you respect her personal space, don't bombard her with attention the moment she walks in. Always accept that if her room door is closed she almost definitely doesn't want to be disturbed.
Do continue to be friendly and polite, and remember that in all relationships this is still early days.
You don't really know her yet, give it 6 months she might be driving you crazy.
Just don't invest too much too quickly.

Keep busy with your own stuff too, and keep in mind she is a house mate not your confidante. So don't be sharing too much sensitive stuff, or looking to her for support with personal stuff.

With any luck this could become a good friendship, but right now your house mates. So respect the boundaries.
All the best,