Correct me if I'm wrong:
(1) you owe your ex court-ordered spousal-support money which you didn't pay when you were supposed to, or possibly you have been paying until now but are considering whether to keep making those payments or not (maybe you don't think you can afford to keep paying her).
(2 version "a") you want to know whether your ex can lien the account in which you kept your pain-and-suffering money, OR
(2 version "b") you want to know whether your ex can place a lien on any of your other property in her efforts to get her spousal-support money.
If it's version "a", I have a question of my own. Why do you care if your ex files a lien against your empty bank- or investment account?
If it's version "b", that question makes a little more sense, and I'm pretty sure the answer is yes. In fact, even if you still had your pain-and-suffering money I'd think your ex could choose to place liens on any of your property that isn't specifically protected by law from such liens. I am not familiar with Texas law, but usually pension, disability, and Social Security income is protected.