Our expert says:
Indeed, low self-esteem and easy temper are common problems, which can respond to treatment ( less successful if the individual is over 60 and has been like this for years ) --- but there's nothing that can be done about it unless and until the individual themselves considers these to be problems, and sincrely wants to take part in, and seeks for themselves, proper treatment. You can't do it for them.
But you seem towards the end of your description, to be speaking of more sinister signs, of self-neglect and hoarding, that could be related to significant Depression with obsessive features, and/or dementia or both. The challenge would be to persuade her to seek help, to see a psychiarist o psychologist able to carefully assess her, and then try to persuade her to acpt the sort of help she may need.
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