Most help/crisis lines are part of a larger organization. Find out what that is and look at the web page for the organization and see what that says and if you agree with it, etc.

If you are nervous about something being too "close"/scary then call a line that is not local to you.

I have called before and been through the training for a local help line to become a volunteer; I did not in the end volunteer though because the training was triggering to me and I did not want to deal with that level of stress/remembering while trying to help someone else clear their own thinking and make their own decisions of what they should do next. I was referred for therapy by one and that was good. . .

Think about what you want from calling, what you expect?