Once she is off the title she has no legal claim although that doesnt stop her saying she signed the transfer to you under duress.
However she lost her financial interest in the property when she went bankrupt.
The trustee in bankruptcy, therefore, can transfer her share of the property to you .
So, even if she signs a transfer deed to you under duress (which she does not need to do because the trustee in bankruptcy, a court officer, can can sign). She has no interest in the property because it belongs to her creditors/trustee .
You will not be able to remortgage the property, however until until such time as you have a transfer deed removing her name from the property.
The conveyancing solicitor who deals with your remortgage will deal with all this as a matter of course . But at least now, you know how it can be done and that there are few pitfalls for you, if any, , if the job is done properly.