A wife whose husband passed away was still in her `idda [waiting period] when her daughter came from Canada to take her to live with her there. The daughter was to depart four days before her mother's `idda was due to expire. Please take into account that the mother cannot travel alone and at the same time does not want to disobey the Shari'ah by traveling before her `idda expires. Moreover, she will be staying at her daughter's house for six months at least, not for recreational purposes.
What is the legal stance of this situation?