what does baby call you?

Baby is vocalizing and though I refer to myself as Foster Mum, I am being called "aw-eh-UM". So very sweet, really! Several fellow FMs just have their 3 year old darlings call them "mom" in public. As a FM myself, I don't have an issue with it, when other FMs do it. How do you all feel and more importantly, how do your CWs take it? I've never referred to myself as just "mum" infront of any bio. In a recent class on helping FCs overcome trauma, nearly every FP in the room indicated that to make the child feel more welcomed and less stigmitized - by permitting the child to call them mom at home and in public. What, in your opinion , is in the best interest of the child? I had one fellow peep explain that "it's noone's business" that the child is in foster care, so just let them call you mom in public..... Feel free to differentiate your opinion: i.e.: 9 month old vs. 9 year old For those who want to know my interest and motive, beyond what's best for a child, there is a rumor in the state that one FP got poo-poo'd by a supervisor for using the word "Mom".