Hi DD19 came home with flat tyre after work today & husband wasn’t too happy about it & started shouting about it not at her but about the car having a flat tyre. Bit of background here - DD has paid 1700 this month from her wages/savings towards the car to pay it off & is also paying off her student finance. So DD didn’t think it was right for her to pay 100 pounds for the flat tyre but DH didn’t want to pay it as it isn’t his car even though DD is paying a lot of money towards the car to pay it off & student finance to pay that off as well. DH reluctantly paid the 100 pounds for the flat tyre but isn’t happy about it and both are not talking to the other as they both argued about it. So who is being more unreasonable & AIBU to keep out of it or just let them get on with it