Am i being selfish?

You got your explanation already, that she was going to undergo a medical procedure.

Like it or not, such things require quiet and recovery afterwards. So, it's entirely reasonable for her to want to stay off the text machine. Which she told you she was going to do. But you ignored that, apparently.

Is it worrisome behavior? Possibly.

But I think she's just recovering and doesn't want to do anything but that right now.

Be a good friend and let her do just that.

Thank you for your reply.
I didn't get an explanation from her. It was no contact.
I had to text her mum to find out what was going on.
It was just a text from my friend saying we should not speak for a while. There was no discussion about anything between us. It just happened, totally out of the blue.
This is what bother sme the most.
All i wanted was a proper discussion between us. Is that too much to ask for?
Would you be OK with being best friends with someone, speaking to them every day for 10 years plus, thinking of them as someone closer than your own family,
only for one day to be totally ignored? That wouldn't bother you?
You have any close friends, a partner?
Friends you always felt you could discuss anything with?
Would you prefer a "no contact,"with your closest friend to be discussed between you both, so it is not unexpected, or be perfectly fine with them, all of a sudden, to just act like you don't exist?
If this happened to you, during your darkest days, you'd just shrug your shoulders and say "oh right, yeah sure, speak to you whenever?"
That wouldn't put doubts in your own mind as to how important your own feelings might be to her? You wouldn't be hurt by that approach?
the thing is....
It's not just my friend who is poorly, it is both of us. We both struggle with things immensely, that's why we became good friends, because of our understanding of each other's complex problems. Her ignoring me feels like, " I know you're troubled, I know you're vulnerable, I know you're at risk, but I don't care."
You're saying that her behaviour is possibly worrying?
So I do have cause for concern? In that we may no longer be friends after all, and to have her no longer as a friend, i should be a good friend and just live with that?
Am i being a good friend, asking her mum how she is?
To be ignored by her mum, even though i'm not choosing to contact my friend directly, (because i'm doing what she asked me to do, not contact her) is perfectly fine...or not?
Both me and my friend know everything about each other. This is why this is so confusing. We've always discussed everything.
To be treated like nobody hurts, to be ignored hurts,regardless of the situation.
Surely you agree with that?
This friend knows how ill I am and how much I struggle, also. You're suggesting I should just think of her? Yes, sure? What would be your advice be to her in this situation? Should she have taken into consideration about how ill I am also, how this would affect me, or is it all one-sided, and the only person that should care, or be a good friend ...is me?
Taking into account how much she knows about my own illness, my own situation and how isolated I am as a person, in your view, what would be your advice to her about how she should treat me?
I have always been a good friend in more ways than you know. Friendship works both ways, right? Surely, good friends take into consideration how both friends are affected by any decisions we choose to make, and we should consider approaching any potential, hurtful situations with caution? Especially when we know our own actions could damage an already emotionally damaged person even more?
I'd be interested to know your thoughts on other things I've mentioned here. Trying to make sense of all this is difficult, hence me asking for advice.