AIBU to be upset at DM's reaction to new DD's name

[Ladyonashortfuse]

We had great trouble picking a name for our new DD - she was actually nameless for a week while we trawled through 4000-odd names on the Internet, books etc. I mentioned some of the shortlisted ones to DM the other day: her favourite was one DH didn't really like and she said something quite rude about the one we have now chosen, which I sort of ignored at the time. When I told her (on the phone) the name we had eventually chosen there was a silence, then she said, 'You're joking?' And then, 'Oh, well, I'm pleased she's got a name at last anyway.' She is now persisting in calling her Baby so as to avoid saying it. Am feeling oddly hurt. It is a relatively unusual name in England, but it's quite pretty (I think) and not like we called her Moon Unit or anything. Should I have taken her preferences into account?

[Glovebug]

El-air-ee

[AnnieOnnieMouse]

Eleri is lovely. It's Welsh, easy to pronounce and easy to spell; a winner all round.
DM can take a running jump.