Hi, I Have An 80 Year Old Friend That Is

Hi, I have an 80 year old friend that is traveling by plane in a few days, however, she just told me her Drs office informed her she has high potassium & needs some meds adjusted but can't be seen until next week. I advised her to postpone her trip until after Drs visit but she feels she can wait 2 weeks until she returns. Please advise