This is a difficult problem. The property is likely to come under the controlled tenancies legislation because of the length of time that the lady has been in the property. Her rent would therefore be controlled This legislation is old and complex, it is also possible that other acts apply but unlikely. You should ask the solicitor to get a barrister familiar with landlord and tenant law to advise. The old lady is most likely entitled to a life tenancy but you should be able to repair the property but there will be a procedure to follow. If the woman is of unsound mind that is not necessarily the land-lords problem, he will have to follow the statutory procedure, if the tenant needs to be made a ward of court for the house to be dealt with then that is a matter for the tenants family. Most solicitors would not be familiar with this area as it is quite uncommon now, would have been bread and butter stuff 20 years ago in Dublin anyway. But there are barristers who know about it, solicitor should instruct barrister.