What is the name of your state (only U.S. law)? ca
i get my kids every 2nd-5th weekend of the month. my ex was late bringing my kids to me yesterday by over an hour. can i hold her in contempt?
You can't hold anyone in contempt, but
the judge can.
You need an "affidavit of facts" supporting an "order to show cause" from the court. That would result in a hearing at which she would have to appear and show cause to the court as to why isn't in willful violation of the order and therefore shouldn't be held in contempt and remedies put in place. The most common example of "good cause" is inability to comply with the order. Remedies might vary widely from nothing at all, a stern talking to, makeup time, change of custody, or jail time.
Here is an article from freeadvice on contempt:
https://law.freeadvice.com/litigation/litigation/contempt-of-court.htm
All that said, I think you're being ridiculous.