Faltering mother's residence ultimately here? (4-4)

I believe the answer is:

rest-home

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'here?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

'faltering mother's residence ultimately' is the wordplay.
'faltering' indicates anagramming the letters.
'ultimately' suggests the final letters.
The last letter of 'residence' is 'e'.
'mothers' is an anagram of 'resthom'.
'resthom'+'e'='REST-HOME'

Can you help me to learn more?

I've seen this clue in The Independent.

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