Only one death recorded in Victoria for a Doris MCLEAN in 1974 but she was 20 years older than the Doris you are looking for and was buried at the Springvale Cemetery on the 11 February 1974. No death located for Doris MILLER in Victoria for 1974.

You have given the date of death for Doris as 19-6-1974.
May I ask where you obtained this date from as she may have died under another name other than MCLEAN or MILLER.

hi i had got information on her sons death
his details were given as ref:
ernest alvin mc lean
age 23 years
sex : male
birth year 1932
death year 1955
fathers name ernest john
mothers name doris thelma miller
death place band ( bandiana raceway )
state victoria
registration number 19763
category : births marriages death & parish records
sub category deaths& burials
collections from australasia

there was an article on doris mc lean on family search
occupation: gentlewoman
death date 7th july 1974
event place melbourne victoria
residence greenvale
event date 19th june 1974
series no771
record number 493

another on billion graves index
doris elizabeth miller
event type burial
event place springvale botanical cemetery
latitude 3794308
logitude 1451807
death date 13th jan 1991
affilliate create date 2014-2-26 22-04-54
affilliate image identifier 6919261

none of these appear to be the doris thelma elizabeth mc lean/ miller ( nee kuhn ) that i am seeking
i suppose she could have been married or buried again under another name