Oh Kaz, I've only just stumbled across your post. I'm sorry to hear that you are feeling so down. Rhiannon's recent sleep issues prob haven't helped either.
Good on you for taking a sleep with her yesterday, bet that helped and getting outside in that glorious sunshine that would have boosted your vitamin D levels too.
Enjoy your playdate today. Am thinking of you out in the beautiful welly weather with your lovely little lady.
p.s. I'm only 20 min drive away and since my DH works from 3:30pm - late Michaela and I are always available if you and Rhi want company at odd hours