Can the husband wash his wife if she died before consummation of the marriage?

Firstly: 

In the answer to question no.
14016, we stated that it is
permissible for one of the spouses to wash the other.

 Secondly: 

It is permissible for the husband to wash his wife after she
dies, even if he did not consummate the marriage with her, because they are
still spouses, based on the fact that they inherit from one another. 

In al-Bahr ar-Raa’iq Sharh Kanz ad-Daqaa’iq (2/118) it
says: The wife may wash her husband whether he consummated the marriage with
her or not.

End quote. 

In at-Taaj wa’l-Ikleel Sharh Mukhtasar Khaleel (3/8)
it says: One of the spouses may wash the other, whether he had consummated
the marriage with his wife or not… because it is a permissible marriage and
they inherit from one another (if one of them dies) before consummation of
the marriage.

End quote. 

Al-Bahooti (may Allah have mercy on him) said: Each of the
spouses may wash the other, even if death came before consummation of the
marriage.

End quote from Kashshaaf al-Qinaa‘, 2/89 

And Allah knows best.