Morning Mollie. 
Snowing here today. Only light so far.
Sounds very complicated with the deposit for your Mum's flat. Can the landlady not just pay it out to you, rather than your Mum's bank account (which as you say, will now be frozen). Or does it still come down to you not being an executor? If you are going to deal with this stuff yourself you might have to open a special bank account to collect the money into.
Yes, the executor situation really needs to be sorted out soon, or everything will grind to a halt.
That sounds a lovely idea, to make a heart in the sand, and let the waves take her ashes away. 
You'll have to time it right with the tide though.
Glad you enjoyed your pineapple cakes (don't think I've tried that).
That's good if you got a bargain on a set of usually expensive pans.