Hi Rachel,
I have found noting things down can be useful, i bought myself a nice new journal notebook and a pen which makes my handwriting look nice and i carry it with me most of the time.
I've not used it much as it may still be a bit raw for me, but i sometimes try and write how i am feeling, some poetry, any quotes which i find comfort in and i think i will probably write letters to my dad. Like you say you spoke with your mum often, I spoke to him several times a week and i feel so sad that i can't update him on what going on or talk about the weather or what we are having for dinner, so it's a way to stay connected and put your feelings and thoughts somewhere.
Not for everyone but it might be a comfort for you.