I have been loving both [name_f]Matilda[/name_f] and [name_f]Maxine[/name_f] but I’m not too fond of their common nicknames. [name_f]Do[/name_f] [name_f]Millie[/name_f] and [name_f]Minnie[/name_f] work respectively for them or are they too big of a stretch?
I don’t think it’s too much of a stretch at all. The appropriate sounds for each of the nicknames are present in their full names!
I think that [name_f]Matilda[/name_f] “[name_f]Millie[/name_f]” and [name_f]Maxine[/name_f] “[name_f]Minnie[/name_f]” are not too much of a stretch.
I think the nicknames fit well 
Definitely not too much of a stretch.
Not a stretch at all, the nicknames fit well with [name_f]Matilda[/name_f] and [name_f]Maxine[/name_f], great choices btw