You don’t sound bitter in the slightest.
You always sound pretty reasonable in all your posts. More reasonable than others in your blended family.
However you are having to juggle so many peoples emotions, demands and quite rightly also noticing how your daughter has been feeling. Noticing that makes you are good parent and in no need to defend that.
If I knew my step daughters had felt bad about me missing their special events I would have taken that as a good sign in one way - it shows that she is open, willing and wants some of her step fathers attention. That is what can build a bond. Indifference from her would mean there was a barrier.
Your partner has a chance here to reach out to her. To make up for anything he misses. I hope he does.
However it might sadly be like my situation. My son was open to a relationship with his step dad, my DP, but DP did not reciprocate as he was way too busy chasing after his daughters who punish him still for staying with me and my son. It doesn’t take much does it, some time and care from DP to his step son.
I actually had to have a real word with DP as he was effectively also putting a barrier up as ‘he spent more time with my son that his own dayghters’. So he resented that time. I told him not to be so cruel as to take this out on my son - it is in no way my sons fault - so to punish him by withdrawing is horrible. Very bad dynamics.
Do you think your DP is doing this? Neglecting to reciprocate a relationship with your daughter?
If he is, warn him that what happened to my DP might happen to him. My son now has no respect for my DP, who has become my ex DP, because I wouldn’t let my son be in an atmosphere where he is ignored any longer.
I do feel that my blended family wasn’t great for my own kids in the end. It wasn’t always like this. At first it added to our lives. I am disappointed and feel regret that my son had to learn rejection, particularly from his step sisters, at such a young age. I’m not sure I’ll ever forgive my step daughters or my ex DP for it.