ohh gender history!
this is sooo interesting & good!
but in what you just wrote there are some problems, for example, women in general have never been the "moral example" of a society , especially in the 19th things like the venerable diseases act all presupposed that women were spreading diseases, and all kinds of writings of the period especially in medical - mental health (basically to control women who didn't fit societal norms) present women as wicked, immoral, dirty, hysteric, and an affront to all rationality, and things which were presented as like men - the sciences etc.
however, there emerged images of a good woman, which was moral and motherly devoted.
and i am oversimplyfying things greatly, but yes.
the problem is that you have to look at historical accounts, the way history is written, not necessarily these concepts of female sexuality. but you can change it around without too much difficulty. oh, and word limits, you should probably try to stick to some kind of time/place frame.
also, when women got the vote, there wasn't 'equal work and stuff' as well.
i did something sort of similar - i used the case study of the women's suffrage movement in britain, and analysed hisotircal accounts of it and wrote about how history presented 'woman' . (at least, that's what i wrote in my synopsis) so i was sort of looking at feminist movements, and how they influenced the way history was written - i had writings from all periods
so yes, it is very messy and you have to figure it out carefully. you have to look at gender history stuff, as well as writing on whatever case study you choose. but if you just want to look at the 'sexualisation of women' then good luck! aha
PM me if you want some help or research etc