My first touch with Green Tara was also a littlebit like if she showed me "I'm serious". She's my Yidam.
Huh? Do you mean to say that Tara exist on some
level? I thought that Yidams are just (useful) products of imagination.
Or what do you mean by saying that Tara was telling you that "she is serious".
Then for the main topic: Does your friend have poor sleeping habits? Poor sleeping habits can induce sometimes very intense hypnagogic hallucinations or even sleep paralysis. http://en.wikipedia.org/wiki/Hypnagogia
I have had hallucinations during the process of falling asleep (seen grinning people running through walls towards me and starting to shake me awake). I knew them to be hallucinations right away, though.
Yes, lack of good sleep might be a cause also. Good point.
When i browse through my dictionary i don't find a better word than "serious". It dosn't mean "real" in that sense, but i use it like "to be taken seriously". If you have a strong friend, you'll take him serious, don't you?
I don't mean it is a person that walkes into my room having cake and coffee with me. But it is like a powerful thought or state of mind, that is able to change situations. You know this?
And to personify this energy in my mind, helps me to get in touch with it. Even though she may be only a thought or some kind of good approach - it is very helpful.
It is said, a Yidam is a form of the dharmakaya of the Buddha. So i don't know how it functions but it is "serious".