I mean, they definitely have them. There's not a single doubt in my mind that they do.
I think at least two kids, because Miorine grew up all alone and Suletta knows firsthand how important sibling relationships can be. Both of them talk about the prospect of having children very early on, but they agree not to think too heavily about it until Suletta's recovered more.
To be honest I'm really torn between thinking about how ridiculously adorable their genetic kids would be vs how much I genuinely think they'd adopt. Maybe both.
This child would literally be the most spoiled ever. Suletta cannot physically say no to them ever and Miorine pretends she can but the truth is that she's even weaker. Their kid has them totally wrapped around their finger from the very start. They are wonderful parents.
They are wonderful parents. They both have their fears--Suletta's terrified she'll mess up and they won't think she loves them, Miorine's constantly worrying about if she's being too controlling instead of protective, but at the end of the day, they do so well. I know this in my heart. There's some slip-ups, sure, but they are both characters who have so much love in their hearts and they're also both capable of learning from their mistakes.
The kid(s) probably end up going to Suletta's school. They grow up seeing the effects their mothers have had on the world, the way things are better now. Not perfect, not even close, but better. They live their early life better than both Suletta and Miorine did, which is the entire point.
Suletta and Miorine raise their children with all the love they have.