yes
The site stripped the parentheses from the question. It should read: "What is the technical term for the familial relationship you'd have with your half-niece's (daughter of half-brother) son?" Your half-niece is your half-sibling's daughter. So what is the term for your half-niece's daughter, in relation to you? My first best guess would be "half-grandniece", but that doesn't sound right to me, and I guess it with absolutely zero authority. Hopefully someone can give the correct answer.
Your niece.
Your half-brother's daughter is your niece. Your niece and your son are first cousins to each other.
Technically, the baby would be your half-niece or half-nephew, and you would be their half-uncle or half-aunt. But many people dislike the term half or step (I have two stepsons and one natural son) and only for official purposes would I use the term half or step. So I'm with C3 Shooter on this, treat them as your nephew or niece.
Totally not classy! unless you are sure both of you cant afford it. Have them pay for half, (go dutch)
in my opinion, i dont really think so...
It would be perfectly fine to give your niece a summer dress as a present, many companies that sell them can be found via the internet and there is a wide variety.
Yes it is. Unless you're talking about going further, and one is eighteen and the other isn't. That's a no.
Under 6 yrs old it's ok
That depends on the situation. Your brother's sister-in-law could be your wife or the wife of one of your other siblings. As long as the sister-in-law is not married, there is no reason you can't.
Its ok to date a handicapped.No the ideas will not interfere with your relationship.