@Ionus,
To me, I would "guess" that they will appear as a fond memory of when they were here.. I don't know of many women that wear flowy white nightgowns, but alot of female ghosts have been described as wearing one.
What I do believe, as I have seen it, and I have read many other simular stories, is that you will or should not see their face...nor will they allow you to touch them I've often wondered why that is.
Yet, I also know as a child I had a hand print when I work up, on my leg, large and deep... No one had come into my room, so a ghost can touch you (a soul) but you can never touch a ghost?
I also believe in lost souls duh given my name:) I also believe in logical explainations for certain things. I was not baptised but I've seen enough to know in my mind, throughout my life that there are spirits, what we call ghosts as much as there are scientific thoughts of explainations for say, esp, being able to talk to someone without words and follow those actions.
Those two souls are alive for instance, yet one can request a tissue from rooms away behind closed doors in their mind, and the other, stops, drys her hands, grabs a tissue and takes it to the person who mentally asked.... Did that when I was young too... Can be scary either way when young to see things, or experience things like that.
Interesting when you are older.