Cat Peeing on Anything on Floor?

My 10 year old cat seems to be in pretty good health. For a while she was eating heaps and losing weight, after I wormed her, her eating returned to normal. About 3.5 years ago I had a baby. I noticed she peed on some towels I had on the laundry floor sorted to be washed. I put this down to behavioural issues. From then on it seemed to be only occasionally that she would pee on things on the floor.

Recently this has been a daily occurrence. The things she's peed on varies from my daughter's jarmies that are warming in front of the heater, to the bath mat, blankets on the floor, my slippers, and she will even climb into the clothing hamper to pee. I am at my wits end! She has always been an indoor cat, going outside when I am outside. I just don't know what to do.

By Sharona from Australia