Given that she is pregnant = what would her caring look like to you - what do you want her to do at this point that would be useful to you? Not whether she will do it or not -that is a different step -but do you in yourself have ideas on how she could help you with the idea that someone can care even when you are not getting what you want?
Also - perhaps this is a time to grow your support base with other people and she could support you through that. Having just a therapist as the lone support might not be serving you well in general. Also - give yourself credit - you made it through the first one and you can make through the second one if you decide you want to do so. You survived without this one for a long time - not to diminish her importance to you but putting it more in perspective where you are able to do it even where you are not completely happy about it.