In defense of the therapist, suicide assessment is one of the most nerve racking things they have to do. They would feel horrible if you killed yourself, period.

If you killed yourself and they never asked you about suicide, that's even worse.

Your T gave you the option of going into the hospital. You made the choice not to seek that form of help at this time. The T obviously supports your decision. Sometimes there is no better way but to ask the patient directly if they are going to harm themselves. Either way it is something that has to be asked to every patient.