I prefer not to use the word demon, since it carries with it too many religious connotations.  There are numerous entities that can exhibit the powerful aura you're describing, but as you said you felt nothing malevolent.  There are lower astral entities that dwell off of humans energy.  In her case, she doesn't need it.  She is just curiously experimenting like you are.  No offense to landofshadows, he/she seems very well-versed.  This particular spirit you're speaking of I don't think was any of the ones mentioned.  

I don't know how much you care about the impressions I get from reading about your scenario, but I'm sure your instinct is accurate.  She's not harmful.  Continue to get to know her.  She knows you're not scared, so I see no reason she'd get insulted and suddenly change her actions.  She may have even been mortal at one time, and your artistic similarities drew her to you.  

The feeling is overwhelming, but overall it will be a positive experience.  I can see you're not frightened, so that's great.  Keep us updated.  Keep it experimental though, don't become co-dependant on her energy. Soon I am sure she will share her name with you.

Thank you also, Unfallen!
I REALLY appreciate anything I can learn at this point; and I've learned more about the occult in the past month than I had known in all my life!
I must have missed my true calling....  
It was suggested  to me that I smudge my area with sage, dress a silver candle with dittany of crete, and skry her sigil and speak to her. (I have a black mirror I made...Will that do?)
When I was getting ready for work this morning, a sigil popped into my head, and I had to re-draw it a couple times until it came out the way it looked "right" to me; the other ones did'nt seem right to the image I had seen at home. I don't know if she had planted it there, or if my imagination is over-active ( I am an artist, after all!)
No, I am NOT frightened, and after the past month I am suprised by the things that no longer make me fearful or upset...I get the image of something upsetting in my mind, I tell it thet it is just temporary (As in "temporal", and will become dust...I should have done this DECADES ago!), and move on. The biggest problem I have now is that while I'm calling upon her I find myself starting to go into a trance while driving to work! Oh, and at work, there have been things that seemed "co-incidental" in appearance, but these were things that I touched (Both having to do with lights/light fixtures so far), so I do not think so!
Thank you all for all of your help! I am very much in debt to the learned ones here.
I will keep you updated on what I find out about her.

I do believe I found out her name.....I remember the one thing she said to me, and while doing some studying on scrying, it came up, it was associated with her name, and I'm 99% sure I know who she is.....I will be attempting to try to contact her now that I know her name, color, metal, etcetera.
If I survive it, I'll report back!