Is there a way you can tell her kindly, without putting her on the defensive? That you are grateful for the invitation, but don't believe it is good for you with the way you are feeling about everything?
I am the last one right now to be giving any kind of advice or suggestion, but it seems there is room to do a mix of kind communication and boundary establishment. They say gentleness is real strength in action and that's the whole point you want to reach as a LBS?
Mid 30's Psych-abusive M with violent tantrums from XH D 9/15; NC forever on