I am going to do my best to explain w/o outing myself.
Me: going through very difficult time at the moment. I have a hobby/sport which is helping me get through. It's massively important to me, but I accept that people don't understand this and I accept that it's not essential I do it ie it's important but other things take priority (like my kids and my work and other stuff!).
Tamara: (not real name): Suggested she was having an party on a certain day and could I keep it free as I would be invited/expected to go. Then something happened which meant she couldn't think about the party for a while. I understood this entirely and did not push her to confirm the party.
I have an event to do with my hobby the day after the event, which I would really like to go to, but can't if I go to Tamara's do. Her do trumps my event and I am fine with that. I accepted that I could not go to my event.
Things have calmed down in her life and she is now able to decide whether to go ahead with her party.
I need to confirm ASAP whether I can do my event, but I have asked her once and have also asked her DH and have had no response.
She is rather sensitive. I know I will be pissed off if she doesn't do her party, meaning I could have gone to my event, but she doesn't understand this.