Yeah, I think so. It happens that if a couple are married, they are joined together to become one and them having a joint account is also a sign that they are one but the fact they have on account doesn't mean it should be their only account. It is a good thing they have a joint account and it is also a good thing that they have separate accounts but know what is currently in each other's account and this entails trust and it is a good sign that the family would last for ever.