My mum has OCD but she has never been diagnosed as there was no such thing 85 years ago.
She has a compulsion to wash clothes a lot and she washes her hands and anything else over the top.
She also has anxxiety about not having enough of anything especially cleaning products and so will hoard. She doesn't like to part with anything and we have helped her clear her house when she had to move but she still goes on about the things that have been thrown away or given away.
Now she has slight dementia she doesn't want to look for anything and if you ask what food she says she doesn't have any because she doesn't want to look. She gets anxiety about food if it has been left to long out of the fridge even when defrosting.
She is very negative about everything and it is very tiring emotionally to be with her for long periods.