@yogibooboo: You were correct to say something. How many times have parents said: “why didn’t you tell me?” after C”V something happened.
If this woman (supposedly) called you crazy she might have her own mental health issues and might not be capable of dealing with day-to-day life issues.
You did a big mitzvah. Don’t berate yourself.
When we were growing up (in the Bronx) everyone looked out for each other and all the parents appreciated it.
Perhaps there is a 3rd party this woman respects who can maybe speak with her??
BTW, doesn’t matter if the caretaker is Spanish, French or Israeli. No need to mention the ethnicity of the caretaker.