NC, although it won't help much if she's reading, as this is full of outing details 
DP and I got engaged just before Christmas 
My closest friend (of 25 years) was in on the secret, giving the ring her nod of approval back in October.
2 weeks after we got engaged, her DP proposed. They've been together 10 years, and it sounds like it was spur of the moment; he bought the ring the day before.
Truthfully, my instant reaction was, oh...weird timing 
, followed by immense happiness for her.
I assumed that she'd also recognise the funny awkwardness, and we'd have a laugh about it and move on.
...This is where it gets odd.
She's been so cold with me since her engagement...telling me about the proposal in a group chat, skipping over all of the juicy details, and jumping straight to mentioning that she'll probably opt for a wedding date within the same month as mine this year.
I'm well aware that I can't bagsy a whole calendar month(!) but I just assumed she'd want to put a bit of distance between them, given our friendship groups have some crossover, and 2 x weddings within a couple of weeks of each other will put financial strain on a lot of attendees.
As it happens, she's now opted for early summer date, the hen will be in a few month's time.
She asked which dates I couldn't do for the hen - there was only 1. The hen is now being held on that date, as it's the one "most people can attend on". The thought of not being there makes me feel pretty gutted, but obviously doesn't mean a great deal to her. There was no apology just a 'you won't miss much' text.
I should point out that she's my MoH.
She's taken a complete inactive stance in the whole MoH thing...I've arranged my own hen, and even though she knows I've bought the dress, she showed no interest and didn't ask to see pictures of it. I invited her to a Pinterest board where her and our other friend who's my only other bridesmaid can pin dresses they might like to wear, and she's not accepted the invitation.
I've offered her help with her planning at every opportunity, but she's not taken me up on any of it (which is fine, I know some people like to knuckle down and go it alone).
It's all just so out of character, as we've been talking about our weddings since we were little.
I'm a major confrontation dodger, but do I have to say something?
I feel so down about the whole thing. I never imagined either of our weddings being organised without each others help or presence, and feel really strange about her being my MoH.
I've drafted a message basically saying how I feel the dynamic has shifted to an unhealthy place etc etc, and how much I care for her and would ultimately regret missing a milestone like her hen.
Totally on the fence about sending, as we're in a very walking-on-eggshells kinda place right now (help!)