This is tough because everyone reacts differently to different things and want different responses to their reactions.
Ummm when I am in a mood with someone and request space (it's taken me years to learn how to do that) I personally don't want to see or hear from them until I am ready. What I haven't learnt to do yet is let them know I am ok again.
Often when I am upset, I want someone to spend sometime with me trying to figure out what's wrong and how I got so out of sorts.
Maybe text her and ask if she is up for coming over to visit, or if she minds if you visit her at hers. If she says yes, be prepared with some of her favourite music or a favourite movie.
And maybe not do much more than hold her hand.
'People are never perfect but love can be. People waste time looking for the perfect lover rather than creating the perfect love' - Princess Leigh-Cheri from Still Life With Woodpecker.