How to claim tds in itr for contractual service

I am filling a return of my sister who work on contractual position, does not get salary but when gets payment, firm cuts 10% TDS. Now the total payment she got for last year is less than 1 lac 50 thousand, I wanted to know how should I file her ITR so that she gets all TDS in refund. Also which ITR needs to be filed ITR 1 or ITR 4. Also where should i fill up her payments amount in ITR.