My partner only receives her DLA in her own right
They say she received an overpayment and as I am now claiming for her as a dependant I have to pay back the overpayment I feel this cannot be right as this happened before we met
You are only liable for the overpayment if you are claiming for your partner as a dependent. - if you remove her from the claim then that is the end of that
even if we did not become involved till after the alleged overpayment ??