What red flags should i be aware of if a therapist is not keen to continue treatment to prevent further embarrassment from disclosing fears ?

Just ask: Therapists are used to tough questions. Just ask him or her if she is interested in continuing the therapeutic relationship, given how important this is to you. There's no red flag or any way to guess what they're thinking. It's not embarrassing to express how you feel and what you fear to a therapist, that's what they're there for.