بسم الله الرحمن الرحيم
(Fatwa: 1477/1003/L=11/1434)
What your family members say is alright. The body of woman or the things she touches do not become impure by touching and sitting if is it not smeared with blood. Therefore, there is no need to wash all these things unnecessarily. It is also needless to take so much time for bathing. If you will continue doing so, you will contract the illness of doubt. Therefore, you should not pay attention to it.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
