Sometimes, a change like this just takes a lot of gentle, but persistent reminders, as when a teenager or adult wants to shed a childhood nickname. It’s not rude to say "It's Kellin now, thanks!" when friends forget. Just keep your tone cheerful and polite.
The meanings are not a big deal. Most people don't think of Mark as meaning "warlike" for several reasons: It's too common and classic a name for anyone to recall its etymology. The meaning isn't immediately obvious, as it would be in a word name; it comes via the Roman war god, Mars. Above all, the notion that Mark truly means "warlike" isn't terribly accurate. Yes, Mark comes from the Roman name Marcus. No one really knows the origin of that name, but scholars assume it indicated a connection or dedication to Mars.
Silence can mean many things: disinterest, polite disapproval, quiet appreciation. You interpret the silence over your daughter's name as a rejection of it by the people you speak with, and you may be right. I am not a participant in those conversations and can't read the body language and facial cues of your partners, all of which would help determine their exact stance toward "Andie" (the name, not your little girl).
Junior and a Half? That’s a new one for this Name Lady. There's really no such thing as a half-junior. It's like a half-rhyme, or being a little pregnant. Either you are, or you aren't. And while it sounds like a clever option, ISS is just not a thing. It’s true that "SS" can be used to stand for ½ in Roman numerals; pharmacists do it. But no one else does.
You haven't said just what it is about Carol that's turning you off, aside from the way it sounds with Ruby. Perhaps it's the rhythm: Your ear craves another syllable after "Carol," but you've already said you don't care for Caroline or Carolyn.
Or maybe the pairing of two word names is causing your discomfort. In either of those cases, a second middle name, either before or after Carol, could help. How about a trio like Ruby Elizabeth Carol or Ruby Carol Jane?
Many parents who are drawn to this style of name run into this problem. Today's fashionable surnames for boys almost all end in –n and –r. That gets repetitive as your family grows. And then you have the added complication of a surname starting with R.
To preserve the style of Easton but break out of the ends-with-N pattern, there are a couple of other groups of surname-style names with different ending sounds to try.
–Ready for a Change
I wish I could start by giving you a hug! I also wish I knew if you have a particular reason to believe your parents would get mad at this request. Are they prone to anger? Or is it possible that you are torturing yourself unnecessarily by imagining the worst? Could your anxiety be playing a role?
Many kids your age are hesitant to talk honestly with their parents. And yes, some parents fly off the handle easily, or are too controlling. But many would love to help if their kids would confide in them. They are well-meaning and want you to be happy.
–Still Love Eleanor
Sure, you could use Laney as a nickname for Eleanor! Parents have lots of leeway when it comes to pairing up names and nicknames. I think a lot of people will really like the combination of old-fashioned Eleanor with more contemporary Laney.
You could consider Elle or Ella as nicknames for Eleanor, but those might be too close to Ellie. Or you could use the full Eleanor and skip the nicknames altogether.
It makes perfect sense that parents who love Freya would also be drawn to Thora—and not, as you point out, just because they face the twilight of the gods together. Both names are short and impactful, clearly feminine but full of brisk, strong sounds, and contain a mix of soft and harsh elements. They fit together beautifully without rhyming or obvious repetition. Their shared Scandinavian heritage is a point of obvious union, but no more remarkable than a pair of sisters named Francesca and Gabriella or Bernadette and Jacqueline.
While it's tricky to pin down, "Leena" (as in Lena Horne or Lena Dunham) is much more frequently used in the U.S. and Canada, while "Layna" is standard in Europe and Australia. So if you live in North America, you could use the "more common here" argument to break the tie in your favor.