As far as the self timer is concerned, we have no elements to say if it was used or not, simply because we don't know what kind of camera was used.Look at the picture. Royce Villa can be seen in the background. Vivian, Miranda and Lynette can be seen. It's not a selfie and I assume it was taken without a self-timer. Without a self-timer because a Derek once wanted a picture with an air jump and Josy said to him that can't succeed. Now there is no air jump here or Lynette has already landed again. Derek once said to Isabella in a cluck (Tremolo Pancake) that what flies up, comes down.
Who took this picture?
I'll leave out the second question.
Was it Amelia, Lana or maybe Isabella. Two are Royce and one has a close relationship with Jill. With that, there are really only two people that come to mind when looking at the photos from Jill's bed box. Isabella and Lana.
The thoughts flow again. Isabella and Lana knew each other about 20 years ago. Therefore, it is likely that James also knew Lana and thus the three girls in the picture.
Was James having more fun than Neil? Did James and Neil know each other? Were they friends? If so, then it is also possible that Neil knew Isabella.
Since I didn't play the Jill path, I don't know how the sushi dinner went and what conversations were had. But there are strange parallels. A rich girl (Jill, Lynette) invites a poor boy (Tremolo, Neil) to dinner with her friends.
Assuming the self-timer was not used, who took the picture? Do you say Amelia, Lana or Isabella?
That it was Amelia I consider very unlikely and for two reasons:
1) As I've already written, the house in the background I think was the house Lynette lived in before she moved, and according to Bianca's account during dinner, it was her father and Jill's father who introduced their two families. So Miranda and Amelia didn't know each other before.
2) We know that Amelia had two daughters and we know that Jill is enrolled in her third year at B&R. So she is at least two years older than MC.
How many years difference is there between Jill and Lana? I say no less than 8, but it wouldn't be incorrect to assume 10.
So between Lana and MC there is a 12 year difference, which means between Amelia and Lynette the age difference is at least the same, unless Amelia gave birth to Lana when she was 8 (LOL).
Assuming then that Lynette, Miranda and Vivian were about the same age, I find it hard to think that Amelia, who was at least 12 years older than Lynette was in their group of friends, unless Vivian is Amelia's sister, but we don't know that yet...
So who took the picture? Lana? I would say no, because of what I wrote sub 1)
Isabella? It could be a possibility but at the moment there is no concrete evidence to prove it.
The only name I can think of at the moment is Marion, who Lynette mentions on the first page of her journal. We still don't know who Marion is, maybe her sister, but I think if her name was included by DPC it wasn't by chance...