shouldn't be a problem as far as the bank accounts are under your name. i think you can use combination of any kind of accounts. the main thing is to show that you had access to this fund for 90 days. btw there is no harm to add a cover letter and explain the situation with attached barclays ...
does anyone know if i want to reschedule my appointment for psw, is there any risk to lose my slot or it will be safe as long as i'm not able to get another?
yes, you can use her bank account as well. as long as funding documents are under your name or your dependent's name, it's acceptable. you can also write a cover letter and mention it. good luck