My pet galah got bitten?

my pet galah got bitten by our ring-neck a few weeks ago on her toe it bleed a lil bit but we gave her a bath straight away and she seemed fine she was walking on it but then only a few days ago our ring-neck bit her again on the same toe we bathed her and this time she will walk on her foot but with the toe off the ground its still swollen and she wont let anyone touch her toe but she is fine with my partner and i touching her. i looked at it today and it looked like it has a yellowish scab on it but im unsure i dont know what to do im trying to stay away from vets as for i can not afford it is there anything else i can do please help ????