Are [name_f]Molly[/name_f] and [name_m]Harry[/name_m] too similar to be siblings?
Nope! They have the same sound at the end, but it’s not a big deal. Now, something like [name_f]Molly[/name_f] and [name_f]Polly[/name_f], or [name_f]Mary[/name_f] and [name_m]Harry[/name_m] would’ve been too close, but I think you’re fine in this case!
Agree with the above! Also they’re super cute together 
Not at all. I like the way they have the same vowel/consonant pattern but very different sounds except for the Y.