Haiz, Istihaazah & Nifaas

Calculating haidh from the time of the first discharge

Q: A woman was fasting and at Zuhr time she notices discharge. The discharge does look clear but it's more inclined to brownish colour. So she doesn't consider it her haidh and she continues fasting and waits to see whether it's her haidh or not. So she reads her salaah and Quraan and whenever she checks whether her haidh has started or not she sees nothing but at the of Eshaa Salaah she notices that she has haidh. 

So will she start calculating her haidh period from Zuhr time or from Eshaa time? 

And if she starts counting from Zuhr time so should she repeat the pages that she had the pages of the Quran she had read?

Woman in haidh or nifaas touching the pages of dua kitaabs

Q: A woman is in haidh/nifaas and wishes to read Munaajaate maqbool/40 durood and salaam. In the munaajaate maqbool on one side is Arabic and 1 side english and in the durood kitaab it's all Arabic. 

1. Is it permissible for her to hold the corners of the page and read from the kitaabs? 

2. If she's read before and mistakenly her fingers touched the arabic text, does she need to make taubah from this? 

Sometimes when reading kitaabs, when turning pages fingers mistakenly touch Arabic/ Quraanic text due to not knowing what's coming on the next page. Sometimes also when not in haidh/ nifaas but not in a state of wudhu. 

3. Should one make istighfaar/ taubah when this happens?