"Not voting for Clinton" is not what is leading to accusations of sexism. It's the voting for two old guys with documented - and often blatantly related - sexist attitudes as well as policy goals.
I assume you mean abortion in particular, but many women do want to protect the lives of the unborn. On that issue, both genders are split.
And...
> 538: Clinton Couldn’t Win Over White Women
> Preliminary exit poll results show that ... Clinton lost the votes of white women overall and struggled to win women voters without a college education in states that could have propelled her to victory.