You cannot get simply file a TRO. The TRO is part of the process; it only lasts a couple of weeks, followed by temporary orders & ultimately a final order.
At the temporary orders hearing you can request access to community property to live (& even pay your attorney).
You also have to figure out a plan. Even with support, where/how are you going to live?
You need to speak to a lawyer as quickly as you can. There are repercussions to your decision to let your children move to Dallas that need to be deal with immediately, or it will be too late.
Depending on the timing of these events it might be too late.
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