She is going to be assesed on the value of the property (not the rent) and her savings and it sounds like she will not qualify for non contributory. When her savings are gone she will be assessed on the 2nd property and if that value is too high she will not be entitled to anything. Is there a reason she has not claimed maintenance from her husband?
There are special rules that apply especially for women who worked a long time ago, to try and bring them into the contributory pension or half of it, in recognition of the fact that a lot of women stayed at home to bring up children. You'll have to ask social welfare about it.