Positronicus I do not know what your relationship with the lady is.

Somebody could take out over her what is called an Enduring Power of Attorney here. This must be done while the lady is aware of what she is doing, It means that somebody can act on her behalf on all financial matters.

Somebody can also take out what called an Enduring Guardianship over the lady, Again this must be done while the lady is aware of what she is doing, It means that somebody can act for her if she becomes incapable of making decisions about her health.

Both "Enduring" documents are important and should be kept in a safe place.