Furious!

I don't think step parents need to be called grandma or grandpa, it's your choice what you want to teach your kid to call her. And by not calling her grandma,  it kind of takes away from that role. Besides,  she's so young, she probably doesn't want to be a grandma to your child anyways. 

Lol! My boyfriends dad is the same! My boyfriend is 20 and his dad is 40 something, his dads dating a 23 year old. And it did not register to me she would sort of be our baby's grandma. That's gross. She's gross. Gross

Honestly just get over it. You'll cause more drama than anything and who knows whether she will stick around. No need possibly damaging a permanent relationship over a possible temporary one, that isn't even up to you.

I have a step grandmother and we all all her by her first name. Definitely talk this through with them if it's upsetting you this much.

Ew lol he could be her dad...for real! What is with people!? Chances are she won't actually be around for long, what 26 year old stays long with a legit grandpa!?

How does she feel? I can't picture a 26-year-old wanting to be called grandma...

Technically she would only be his step grandma. If you're not comfortable with it simply say you'd rather your kid call/know her by her name. I wouldn't be comfortable with it either. Good luck!

You should really have a sit down conversation and let her and his dad know, your child will not refer to her as grandma seeing as though you dont know her and do not feel comfortable with it. Down the road if something changes another conversation may need to take place but dont let it go without conversation because it may cause a bigger problem.

Yikes.... It's this a awkward situation. She will be y'alls mom and is only a couple years older than Y'all. I wouldn't know how to act to tell ya the truth...

My mother is my dads second wife. I had two older half brothers( one now because one died last year) and they both have two kids each. So my mother is a step parent and has been married to my father for 40 years now, so how is she not a grandmother to her step sons kids????  You are insulting step parents who give as much love as a biological parents does by saying step parents aren't grandparents. As for this issue and her being young, it's your call what your kids call her, my nephews and niece call my mother granny and have since they could talk. But then again my mother isn't  26 either so it's a tricky situation. The 26 year old may not stick around long so wouldn't worry to much right now !