Dizzy spell

Ang has been at hers for days but turned up this morning. She stayed til the evening but got leary and it took me over half an hour to get her out. I had phonecall from Martine as she was going so rang her back after Ang had gone. Ang has only eaten half a slice of cheese on toast in 2 weeks now. As she got up to leave she went dizzy and leaned on the window sill to stay upright. She's not safe on her own but can't stay here shouting.