Morning Abbie,
Just a little side note here, given the fact that all this kicked off just a few days ago it sounds to me like your parents are actually making faster progress than most down this path!
I told my parents 18 months ago and I still get similar behaviour from my dad that you do!
As for the picture thing with your mum, just remind her gently that you will always be and HAVE always been the same person, you are simply expressing yourself openly now, tell her you want the pictures to stay (unless you really can'd abide them) and try and trick her into a big hug!
Alice
xx