need to apply quickly for deputy for my mum with dementia

[Mexican cuties]

any of you lovely experts out there can help us with this question,, moving forward from previous posts where father in law is still in hospital with fractured hip, mum in law is in respite care which we have managed to scrape together for 2 weeks, but going through paperwork and bank details, lots amiss, to say the least, cant believe whats been going on allegedly!!

[Riley Blue]

Lasting power of attorney is probably what you need: https://www.gov.uk/power-of-attorney/overview