Wiping a drop of urine from the toilet seat

Q: There was 1 drop of urine on my toilet seat and I first dried the seat then poured water from the jug carefully over the seat, while pouring the jug of water over the seat, some water leaked off the seat to the sides and down to the floor. Was this water that leaked najis? And also someone stepped on that water and walked across the house. Is the carpet in the house najis?

Giving the wife a parting gift after divorce

Q: I am reading the kitaab (Handbook to a healthy Muslim marriage) after learning the fiqh of nikaah.

I'm on page 236... its explained that when a husband divorces his wife, he should provide parting gifts to his wife e.g. a set of clothing. It is the first time I'm hearing of this hence..

My question is, does this happen in our South African community and is the above also known as Mahr Mithal. My Apa taught us about Mahr Mithal from Behishti Zewar.

Changing one's name

Q: I am a girl from Pakistan. My name is Ashna, and I personally do not like it. It is not a religious name, but that is not the reason why I do not like it. I simply do not like the way it sounds or the way it looks. Can I change my name with my parents' permission? Or will it be considered showoff or something else? Should I change my name or not?