Defendant sends partial pay w/ stipulations - is it binding?

[NeedHelp1234]

Thanks everyone in advance for your reply.

I won a case against three defendants. There is no agreement as to the amount each defendant is responsible for (according to the county clerk all three are equally responsible and I can essentially pick and choose who to pursue).

The total was $900. Once defendant sent me a $100 money order and wrote on the memo section "towards the my 300, balance left = 200." My questions are:

1) If I cash the money order, am I agreeing to her terms?

2) If I cross out her note and enter one of my own indicating that she is responsible for the full judgement amount until it is entirely paid, current balance being $800 (the other the defendants have not provided any payment yet), will that nulify her claim that she is only responsible for 200?

3) Do I have any other options? We are not exaclty on speaking terms

Thank you.

You normally can cross it out and inform them that legally they are responsible for the full amount.

They are jointly and severally responsible.