Getting foreign bank account balance for FAFSA?

On FAFSA, how should I report a bank balance on a savings account in a different country?

To get an totally updated daily bank balance from a foreign country, where there is a time zone and language barrier, is going to be so hard. (This is an inherited asset). I could have my elderly mother-in-law call, as she speaks the language, but the accounts are in my husband’s and DD’s names so I don’t know if they’ll give her a daily balance (even though she gifted us these accounts).

We usually only get quarterly mailed statements, and they take a while to get here. Could I simply overestimate balances? (Interest doesn’t vary much).

If I do it off the mailed statements, it won’t be totally up to date as they take a while to get here from Europe. I don’t have access via internet for these.