I was late picking up s11 for access visit

[bus boy]

I can very easily say I am never late with my pick up or drop off times for access. I never miss access although xw's first statement on her sworn affadavid for family court was " bus boy continually misses his access."
  Yesterday I lost track of time and was 15 minutes late picking up s11. I text him and told him I am late but I'm on my way. This is the first time I've ever been late because I lost track of time, I've been late a few times due to highway being blocked due to an accident or construction but never due to negligence. This morning Xw text and said I should text her when I'm going to be late. It is the proper thing to do, I know this and I have let her know in the past, I didn't let her know yesterday because I didn't know I was going to be late, I did text s11 and let him know. I got there early one day and she was very rude about it, I text one time I'm going to be a bit late with s11's drop off and she had many difficult questions and than said no.

[Turkish]

Given that you are usually solid and given the way she is,  I'd write this off and BIFF it. 

"Sure,  will do."

No further response on your side is likely necessary. 

[ForeverDad]

Does your county have a guideline for parenting schedules?  Mine does, though apparently it isn't fully binding, and so is more like an expectation.  It specifies that exchanges have a 30 minute window.  If that window will be missed then notification of the other parent is required.  Probably you have something like that.  Could you start a new boundary that you're not "guilty" if you arrive within a reasonable time frame.

Determine too whether you ought to share information that makes you look bad.  Yes, that's right, we shouldn't have to share TMI, every full truth thought.  That can Gift her ammunition to enable her to Shame Blame.  Rather than saying "Sorry, I forgot and I'll be a little late" perhaps a neutral, less informative "I'm on the road and I'll be a little late"?

[Anamika]

I'm with Turkish and ForeverDad.  There is no reason you need to tell her the details of why you are late.  You are not her husband anymore and you do not need to give a reason.  Since I have been using the BIFF method my life has become much easier and my documentation has drastically went down.  There is nothing for her to get twisted up about if I don't share anything other than basic logistics.  I would suggest you keep a journal just in case you get drug back into court.  Happens to me all the time.  Like this week even.