It all depends on what your contract says.
My contract states that I can terminate at will with no refund of fees. If I terminate with unused tuition fees still here (paid days still unused), I use my discretion as to whether or not I refund the fees. I will say that I hardly ever do. Sometimes though, I do find it easier to refund and be done.
I have never been in the situation you are describing but it does seem unprofessional how your provider handled it. I can understand 'why' she didn't want to continue on but I still would have honoured our commitment and seen it through.
Again, it all comes back to your contract. Best of luck with your new provider!