Thank you for all your replies. There's no out of session contact and she likes me to talk rather than write stuff as she thinks it's important to actually say the stuff going on.

It felt really awkward when she got frustrated as the times I've either done it as I've only just remembered as I only see her fortnightly or I spend ages trying to work out how to bring up the subject as it's hard and there's a part of me that wants to talk about it and another that wants to completely avoid it. I'll try and bring stuff up more at the beginning. I think I leave the harder stuff til nearer the end as I start feeling more connected with her