I would not worry to much , if she's using her hide its a good sign that she has settled into her enclosure , you said she was more active ? This could be because she was exploring her new environment ,
Infact G.rosea was my very 1st T , and she also had me worried couple of times , they sometimes refuse to eat months on end !

hello to all, just checking if it is normal for my g.rosea to come out of her hide EVERY night

Not unusual at all. That is when they are most active in general, when they think we are not watching

Most spiders are active at night, if you want to catch a glimpse of some of your pet holes do the night spying game

Is it natural for her to zoom back into her hide as soon as i open the cage

Yes, some tarantulas will run and hide once they feel or see movement or the lights gets turned on.

The larger and the more secure your spiders feels the less they will run away and hide from you.