She's 74.
She will travel over 200 miles by train, including catching the Tube through London.
She's realistically in good health but weighs a little over 7 stone and, as previously mentioned is 74.
I know she's lonely and misses DS us but I don't think the risk is worth it. She will protest that it's all been blown out of proportion and she'll be "fine".
DH, DS and I are of the opinion she should stay at home - I fear tomorrow's conversation will be a tricky one 