I and my children want to visit and stay with my mom during her cancer treatments and healing.

I want for my children 1 and 3 yrs old to know their grandmother, she has got cancer and will not get well, hopefully she will be able to live with it. travel and visit is not available for us at the moment, and I'm afraid that if we wait it will be to late. I'm trying this as a last way out. Thank you all kind souls out there