"mum to be" is a correct and usable phrase in written English.
For example, you might say this sentence: "My friend is a mum to be, and she's really excited about it."
She is the national mum; she's how you'd want your mum to be when she's old.
For Josephine, the experience of being a first-time mum to be was entirely different.
My grandma was a cutter and she trained my mum to be a cutter, and my mum decided to choose me to train me how to cut.
"It's almost deliberate the extent to which they blank it out," says Thorn, "because it isn't what they want their mum to be".
Of course, I'm terribly disappointed – I'd love my mum to be the biggest champion of [my work], but I accepted years ago that it wasn't going to happen.
After that, Moroccan went behind her and tried lying along her legs in an attempt to get his mum to be a bit more animated, before being led away by one of Carey's entourage, kicking and screaming.
"My mum continued to be an inspiration to us all.
Dad was a bus driver, mum used to be a dancer.
It's like watching your mum trying to be a lap dancer.
"Honor was very sad and I was, like my mum, trying to be cheerful.
The next mum-to-be said she'd play her baby some Schubert on the piano.
