As an adult who has struggled with ocd I am yet another saying it does sound like the way ocd often emerges in children. I think the problem is too recent to jump to any conclusions though. I live in fear of my dd showing signs of this. I have to tell myself though that forewarned is forearmed, to some extent.
Looking back my ocd did not get bad until I left school, prior to that I had phases of intrusive thoughts but they resolved. Hopefully if it is ocd this episode will pass. Keep a close eye on it though in case it doesn’t.
Things that might help in the short term is a big change of scene or distraction, and keeping her as happy as possible generally. Is there any way of doing a trip or planning some kind of project/adventure for the holidays? Or having a friend or relative who raises her spirits to stay? Sometimes a pet can help.
I think it’s worth informing yourself about ocd just in case, especially since the things that might be helpful are often counter intuitive. Try to get an understanding of the principles of cognitive behavioural therapy and especially the branch of it called exposure and response prevention. Look into anyone nearby who specialises in this especially with children so you have that ready. Maybe your friend does in which case great.
A key thing is that when it comes to ocd worry is not your problem…if we can accept and tolerate worry then it will naturally pass. The trouble is that in ocd a compulsive response to the worry develops and forms a vicious circle because it ‘red flags’ the worry in the mind. So trying to avoid the worry component actually makes it worse. Generic distractions that aren’t clearly related to the worry are often helpful though.
I don’t know anything about ways of adapting the cbt to children, but if I had to guess I would say introduce the idea of worry or unease as something that we shouldn’t be scared of, and it’s normal to feel anxious about something but it doesn’t mean that it’s true or that anything needs to be done. Worry will pass if we just let it be. Tell her she can always talk to you about anything, but that she shouldn’t feel like she has to. If she doesn’t ‘confess’ it doesn’t matter, she will always be loved and no matter what tricks her mind plays on her she won’t be a bad person. If she doesn’t confess the worry and the feeling that she needs to confess will just pass. So hard to explain to a five year old.
Also I am sure you won’t but don’t say anything that might add to a feeling of guilt, like ‘it makes mummy sad to see you so upset’. At this age the power of parental reassurance is so strong and it would be better to instill confidence that you are a strong and happy presence who can take on her worries if you know what I mean.
Hoping things settle soon for you all OP.