If a close relative stopped speaking to you, would you want to know why?
This might be long, but hopefully not rambling and I just really need to get some perspective on this situation as lately is has been keeping me up at night wondering what the hell happened and I can’t stop thinking about it.
My cousin and I had always been close growing up as there’s only 11 months between us and our parents were very close (her mum is my dad’s little sister and my dad sadly died when I was little so that made us all quite close as a family).
We holidayed together as teenagers, spent quite a bit of time together going out drinking and enjoying each other’s company, she was my chief bridesmaid and so on, and we thought of each other as sisters and I love (loved???) her very much.
Until about 4 or 5 years ago, when she just basically stopped bothering with me. I would message asking to meet up and she would fob me off and nothing would get arranged, this happened loads of times with me always being the one trying to make plans and her never being interested. I honestly have no idea why she seemingly went off me, though I have a theory. I hope I don’t come across as a bitch because that is not my intention, but I have to wonder if she stopped talking to me because she is jealous?
The reason I think it may be jealousy is due to her marriage sadly breaking down (which she didn’t really discuss with me, which was totally up to her of course, but I would have been nothing but supportive) and I wonder if she resents me because I am happily married and have a child and I know she wants to have children.
I’d like to point out that at no point have I ever rubbed anything in her face, I have never gloated about anything and if anything I am jealous of her successful career, brand new car, numerous foreign holidays and nearly paid off mortgage!!
There have been issues in the past with wills and inheritance that caused a falling out between our parents (which was hard as, due to my dad no longer being with us, my mum bore the brunt of their ill-feeling), but we always swore we wouldn’t let those issues come between us.
I guess what I want advice about is whether I should ask her outright if I have done something to upset her or should I just let it go? I’ve asked my other cousin (her brother, who was also very close to us growing up and she is still very close to now) and he says that there isn’t anything wrong that he knows of… but how can we go from being so close to never speaking if I haven’t done something wrong?
This is literally tearing me apart inside, I am gutted!!
Also, so as not to drip-feed, I did delete her and her brother off Facebook, to see if they’d notice as I was sad and upset that she didn’t seem to give a shit about me anymore, unfortunately she noticed straight away and I stupidly lied and blamed DD for “messing with my phone, and deleting loads of ppl” which she no doubt saw straight through. I don’t think this had much bearing on the breakdown of the relationship though as it happened ages after she started to withdraw from me.
I realise, reading this back, that it could be that she's just not bothered and maybe I come across as needy? But family means a lot to me and I thought she loved me as much as I loved her 
Anyway, if you made it this far, thank you very much!
What would you do?