I think it’s really difficult as you don’t want her to play you and her dad off of each other.
You should both be on the same page and could it result in a situation where she goes running off to her dads everytime you try and put boundaries in place.
However, I think it’s right in this circumstance to have not carried on the punishment as it’s your consequences because of behaviour towards you.
FWIW I think grounding her for a week is unreasonable.
Firstly, you jumped from 1 day to 1 week - how did that happen, why not 2 days?
Secondly, you grounded her for a week knowing that she was going to her dads in 2 days time.
Thirdly, what if after you said a week she continued to be rude? Would you have increased it to a month or year?
Its really difficult but you have to make punishments small so you can increase it if you need to.
You should also threaten to increase it if their behaviour continues and give them that choice before reacting first and increasing it too much.
Teens do struggle to control their emotions and are going to get upset if you’ve just grounded them for a day, even as adults we get annoyed sometimes.
I personally would have grounded her for the day and if she was saying rude things then I would tell her she’s going to keep making it worse for herself and I suggest that she goes and calms down before I extend her punishment.
If she carried on being rude I would threaten to increase it to 2 days and repeat that she needs to go and calm down if she doesn’t want it increased to 2 days.
Then if she carries on increase it to 2 days.
Of course hindsight is a wonderful thing 😁