This has bothered you enough to post here, asking us the questions you want to ask your Psychologist, so you have serious concerns.
I think the next time you see her could be a great opportunity for you to have this discussion with her, directly. You could include how you feel so alone & have the thoughts that she doesn't care, & isn't there as much as you feel you need her, &, of-course, about how serious those thoughts about self-harm are. & what you can do when you have them.
You could also ask her, in the event you are at risk of harming yourself, what you need to do. She can teach you ways of dealing with the thoughts & feelings. That's what her job is: to teach you what you can do for yourself.
How your Psychologist is supposed to know if you are seriously at risk or not, is if you have talked to her about how you feel.
There are also other services, such as BB's own Counselling Service, 1300 22 46 36, anytime to talk to a counsellor.
Or, Lifeline 13 11 14
Or, The Suicide Call Back Service, 1300
&, if you ever, at any time, feel you are unable to stop yourself from harming yourself, that is extremely serious, so, you need to call 000.
& we'll be here on the Forums, too.