Nadia El-Nakla said in an interview with the BBC’s Reporting Scotland on Wednesday, that her parents, Elizabeth and Maged, tell her “they feel like they are going to die”.
The El-Naklas travelled to Gaza last week to visit an elderly relative and Nadia’s brother, who works as a doctor in Gaza.
On Saturday, Hamas, an armed group in Gaza, attacked Israel, prompting fighting that has killed more than 1,300 people on each side.
On Wednesday, Gaza’s sole power plant ran out of fuel and shut down after Israel’s decision to cut off supplies.
In a video clip played as part of the BBC interview, Elizabeth said: “We’ve no electricity, we’ve no water, the food we do have, which is little, will not last because there is no electric and it will spoil.”