Helping a child overcome anger issues

Q: There is a seven year old girl in our family who has anger issues. When she is angry or upset about something she tends to scream and throw things and forgets whether she is talking to an adult, or other older family members or friends or whether she is in a public place. Its impossible to reason with her then. Also, she gets angry without any reason at times and switches very quickly from happy to angry and vice versa.

Please tell what should we do and what should we recite so that she calms down and becomes less angry and stubborn over time.

Seeing brown discharge after haidh

Q: I have a question regarding haidh

1. I get a brown discharge all the time sometimes it's light sometimes dark. So because of this, as soon as 15 days are up since my last haidh and I see this brown discharge I start counting it as my haidh even if I'm not bleeding but I was told I'm counting wrong I must count it 20 clean days and 10 napaak days because I never had a completely clean 15 days without spotting. As far as I can remember I always had discharges in my clean days. How am I supposed to count my days?

2. If I have to count it 20 clean days then to get my days right by re counting the easiest will be from after my baby wa born, that was 20 August 2019. She was born and I had a 40 day nifaas because I was discharging till the end and even after the 40 days were up I was discharging. How should I re count my days?

3. I don't get a yellow discharge all the time, it's occasionally. Does it count as a starting of a haidh if I get only a yellow discharge and during my haidh days if I get only yellow does it count as haidh?

Showing good character when working among people

Q: We are a group working together on various assignments. Lately, I started having fights with a friend who is also a co-worker due to his mood swings. This person presently does not like me due to few issues that took place between us. Please could you provide an emergency wazifa to remove hatred and anger from this person's heart for me so that our friendship can once again be restored.

Accepting a different currency from a customer and exchanging it for a better rate later on

Q: I work at the airport at a car rental. Now if a customer comes and wants to pay in Euros but we accept only Dinars, to make his work easy I take the Euros from him at the current exchange rate at the airport knowing that the exchange rate will be better outside in the city. So I accept those Euros and use my Dinars to give to the company and later take those Euros and exchange it in the market at a better rate for myself or sometimes I wait for an even better rate. Is this money halaal?