My mother in law will be going into a care home and will need self fund for a few months until she reaches 23K, my father in law has access to the joint accounts where it looks like he can use her 50 % to pay the self funded payment, will he need to pay out 4k to get deputyship for the sole account which has a small amount of cash in and not needed for the self funding as would end up being part of the 23k.