Some people have no tact and some people delight in taking every opportunity to knock down a mother trying her best. It unfortunately sounds like your friend is dealing with both. People are jerks. [name_u]Tatum[/name_u] is a fine name. [name_m]Even[/name_m] if it wasn’t, you don’t comment on the name of a child who has been born, period, ever.
[name_m]Even[/name_m] if someone asks for my opinion on a name, I have completely different approaches to talking about a name in theory (where I’m way more likely to be blunt and say “it’s tryndee and cutesy and not good” if I feel that way) and talking about the name to someone who likes it as a potential name for their child (where you just…do not do that, if you’re a decent person). You can say it seems likely people will misspell [name_f]Chelseigh[/name_f] throughout her life, if mom asks. You can say Americans who encounter Aodhla may not know what to do with it, if mom asks. You can say [name_u]Elliott[/name_u] may not like being assumed to be a boy, if mom asks. If you’re not asked, you can assume your opinion is neither needed or valuable on this particular matter. [name_u]Tatum[/name_u], [name_f]Chelseigh[/name_f], Aodhla, and [name_u]Elliott[/name_u] are not going to be harmed by their names even if they’re not your personal style.