DH has a court order for contact with his DSS including half holidays. This last bit is quite new (18 months) and in the summer is 2 weeks in a block and an extra week. Because ex is quite chaotic (MH issues) the order says that DH can book the two weeks for a family holiday, and they need to agree the other week.
DH asked about it last year and wrote 3 times from Jan to March.
Last week he gave her a reminder of the holiday dates. She is really annoyed. She says he shouldn't have booked the single week as they hadn't agreed to it. She doesn't want to change the week we've booked for a different week; she still doesn't know when/if she is going on holiday, but she wants us to cancel our week. She's threatened to 'just book a holiday when I like' which puts DSS right in the middle. Should we have left the single week? She's not objecting to our main family holiday.