Doing a school project on Diwali and Hindu gods

Q: I really need to know something so badly! In my art project at school last year in year 13, it was about festivals so I looked into Diwali and wrote about what they believe in and I also did an observational drawing of one of their deity who sits on a lotus flower. I didn’t have any intention of worship at all and I did rip it out of my book but I did leave an image of one of the deity in my sketchbook and recently saw it and ripped it out. At the time I didn’t know what shirk was really and I didn’t think what I done was bad because to me it was all part of my coursework for school and the beliefs I wrote about never was something I believed. I did write about the stories and the hindu gods and wrote down what the Hindus referred to them as but I know they’re not lord or god but I had to write down that because that is what Hindus believe and so that’s what I was meant to write but it all looks so bad that I think about it. Did I do shirk?

Equality between wives

Q: My husband has two wives. I have read that a man with two wives is supposed to give them both equal amount of time. What does this equality mean because I think in todays lifestyle one man cant give time equally and its impossible.

An example is that last night my husband came home late, around 1am. So he gave me time from that time till around 10 am the next morning. Now with the other wife, he went to bed early around 9.30 pm and from my knowledge, he was awake till 12 am and Allah knows best how long.

I dont know but my question is the other night I got less time and the other wife got more time. What's the Islamic ruling on this. Is it permissible?

Inheritance

Q: Kindly advise how to share the estate of a divorced lady if she is survived by 1 son, 1 daughter, a widowed mother, two brothers and a sister.

Experiencing signs of haidh without seeing blood

Q: During the time of the month when a woman is expecting her period, she sees a small discharge of blood at night. She also feels what seems like the beginnings of period cramps. She assumes it is her period, doesn't pray isha, goes to sleep and wakes up in the morning, doesn't pray fajr. Later in that day, she goes to the bathroom and sees no blood, though she feels cramps. At this point does she have to pray? Does she have to make up the isha and fajr prayers she did not pray assuming she was on her period?

What if her she sees blood again later in the day?