"What is the most important thing I need to know right now" is always a good question.
"Do I have a guardian angel and if so, what is my angel's name?" - personally i don't like these kind of questions, unless you are asking your own to show you who they are.
Everyone is different when it comes to this though, but i respect the importance in a person finding out certain things for themselves. Guides and so on is just something that helps lay down a foundation that you can never doubt, if someone else lays it out for you, it can never be as strong. The premise is that your guardians and guides are always there with you, but stay in the background until you ask for them to work with you. This ensures that you meet them when you are ready too, as it is a natural order of thought to know when to invite that into your life. If that makes sense.
Second reason - Another psychic could describe what they see in their perception of your guide, but it may not be on level on how you would perceive your guide. I know this to be the case with my own guides, that the image i perceive them as has changed as i have developed. It's like upgrades if you will. I can tell also if i ask a person to tell me what my guide looks like as to what level they are currently seeing at.

If they see my guide as a pair of green eyes and a pure energy form, then i know already what it means because i have gone through the journey of perceiving each image - that is a higher form than say seeing him as a dog or wolf.
But if i had not had that personal journey and experience for myself of the upgrades/images, and someone else from day 1 described and told me my guide before i could see or know, then i would be missing out on a wealth of experience and information. I would also question if i was just seeing my guide 'that' way because the psychic said so. Ie suggestion.
So that is why i do not do this for others just starting out, there are exceptions but on the whole, i refuse to tell them what their guides look like as that is subjective anyway and I don't want to take away what is a personal experience in learning to trust one self and what you see.
As for Edward, Edward could litterly have been anyone standing behind you. Spirits get nosey sometimes and pass through. By all means ask if anyone sees Edward but, i would only find it more interesting if you never mentioned Edward and then another reader picked up edward. That would tend to suggest a link and not a random.