Sounds like a dream guide. I have one too, older members know about mine. ^_^
Anyways, the feeling you described is very accurate, I believe. I would go as far to say I'm sure she's your dream guide. However, dream guides can be very....err, DIFFERENT from what you expect. Not every dream guide is the same. Percy has his Freddy, and I have my own, and as far as I have read, they can differ quite a lot. But the only thing they have in common is that 'feeling' of, I can't put it in words, being content? Happy? I don't know. But it's certainly there.
And their aura. Their aura 'stands out', doesn't it?
Also, their ability to understand your thoughts and emotions is very rare.
So yes, a dream guide.