I read your post and felt sad that you're frustrated with yourself. Something somehow robbed you of your T's support and that is frustrating, but I'd urge you not to beat yourself up. Do you have any what prevented you from calling or texting her - do you remember what you were thinking or how it felt at the time? Could it be that you're annoyed with your T for not being able to take away that feeling that stopped you from texting her?

You are allowed to feel angry and frustrated with your T. Honestly. It's completely okay and to be expected. Would it help to remember that your feelings about anger are rules you currently have for yourself - they're not shared by everyone. So while you have this rule for you that anger is forbidden, your T doesn't have the same rule, and probably has a different rule that says your anger is valid and not forbidden.