Minnie short for Mina?

I have a daughter [name_f]Ruth[/name_f] and we call her [name_f]Ruthie[/name_f]. I’m thinking of naming our next daughter [name_f]Mina[/name_f] after my husband’ slate grandmother [name_f]Mina[/name_f]. I thought [name_f]Minnie[/name_f] would be a cute nickname for our baby to go by. Thoughts? Can I have a [name_f]Ruthie[/name_f] and a [name_f]Minnie[/name_f] since both end in “ie”. I like that they are both vintage names and a bit unusual. Let me know what you think!!

[name_f]Ruth[/name_f] and [name_f]Mina[/name_f] are cute together!