Kerry Katona is worried about her mum as her health declines. The former Atomic Kitten star has opened up about Sue’s recent stint in hospital after doctors discovered clots on her lungs and Kerry has admitted watching her mum decline is “hard to see”. She wrote in her column with OK! magazine: “This week my mum hasn’t been well, her health is really declining and it is worrying for me. It’s hard to see. [Kerry’s fiance] Ryan and I have been arguing like cat and dog too so we’ve not had the best time. We’re not in a great place at the moment. “I do like to be honest when things are like this, …