My niece calls my sister nina or there is memaw.Probably not the way you spell them but for pronunciation purposes it looks good.On another note my dd got married 4 years ago and her husband told her that when he got divorced he had it put in the divorce decree that no one else could be called dad or mom. First response from me was you can't help what a child will call you . Needless to say they now have my beautiful first grandbaby and I told her that when he starts talking the other kids are going to either start calling her mommy or the baby will pick up when he is old enough to call her Jonna ,they have the two kids 5 days a week during school year and then full time almost in the summer. All I can say is ,it is a messed up situation .