A Vulcan has three times the strength of a human, seeing as how both males and females are raised on the same high gravity planet then their strength would be equal to one another. Some may be stronger, by carrying out more thorough fitness regimes.
I don't see anything in Trek that suggests Vulcan females are any weaker.
Commander Austin Harris, First Officer, Deep Space Nine (by FltCpt. Bossco)
8.01 - Darkest Before Dawn
(Chapter 8 added, 12/09/2015)