I run a toddler group in my church. Although it's run by the church, we see it as a community activity, not a "get them in and convert them" activity. Everyone is welcome, whatever their beliefs.
Recently I've become aware that one of the mums who comes along has been trying to convert the other mums. This lady belongs to a different church; she keeps inviting people along (fine), but then being really pushy about it. Or she'll be sitting with someone in the group and suddenly start talking about her faith and making them uncomfortable.
I'm not sure whether I should tackle this in some way. No one had complained; I just happened to find out after one of the mums mentioned something. But then people might just stop coming because they feel uncomfortable, and we wouldn't know.
On one hand, it's adults having a private conversation, and I'm not comfortable with policing that - adults should be able to figure out a way to change the subject.
On the other hand, I don't want anyone to feel uncomfortable. We also sometimes have people coming who are at a vulnerable stage - e.g. PND, divorce, illness etc - and I don't want her to take advantage of that.
So, what would you do? Say something (and if so, what?) or leave it?