This kind of came out of nowhere to me tbh
Like on the one hand I get how it could make sense for the character, but we've established her still having a lot of hookups and throwing herself as matchmaker at her friends. She hasn't given Mum-Friend vibes off at all to me - which is less a factor of what she's been doing and more how she's been shown to be doing it.
I think there are elements of the character here that'd be interesting to bring more to the fore - being unsatisfied in her flings, wanting a more traditional courtship relationship - but the "I am the mum friend" thing is... weird. Because it's undoing the parts of her character that have been very pro-active until now. It undoes a lot of her agency to say that instead of being a person who throws herself into being that, it's something she feels is being pushed on her, or a burden.
So, instead of revealing more depth to her, it's kind of undone what I previously understood about her in a way that makes her less interesting to me.
Elliott being on Soft Boy forums is top notch though.