Complex sentence: Prosecutors did not try Routier for the death of her older son, holding his murder in reserve in case Routier was acquitted in the first murder trial or her conviction was overturned on appeal, as there is no statute of limitations on any murder charge in Texas.
Split into simpler sentences: Prosecutors did not try Routier for the death of her older son, holding his murder in reserve in case Routier was acquitted in the first murder trial or her conviction was overturned on appeal. This is possible as there is no statute of limitations on any murder charge in Texas.