Op I was pilled up for not letting my ex know dd ( 14 back then) had been to a&e until we got home afterwards.
Dd was accident prone so many trips, I thought it was s sprain, turned out it was a broken leg. So I let him know within 6 hours of the accident.
I hadn't seen it as a big deal
After this event dd had two other trips to a&e and he never informed me, she broke her wrist and there was another but can't remember
To me the most important thing is the DC is in a&e and safe, that the DC has who they want and need with them.
Dd2 was blue lighted this year three time, the first she was with her dad and it took him two hours to let me know...they were 110 moles away and tbh I was in ignorant bliss, but nearly found out from a friend who was there.
The next time did was with me and I phoned before the ambulence left so he could know and decide what he wanted to do - we were 50 miles from home, he stayed home and I kept him informed
The third time we were both there
The most important thing in all this is that both parents put there differences aside and get on with what there DC need at thistime and sometimes both parents aren't needed, just one is fine.