Please don't call it a "rechristen" god. That makes no sense & creates problems for Judaism.
The Jewish God concept is unique from the Christian one. Judaism has faced a lot of persecution for those differences. So it'd be nice not to be lumped in inaccurately.
Along the same lines, I dint' know anything about Asatru, but respecting your parents & others is part of most religious creeds. You don't & shouldn't actively pray in a way that will make you feel conflicted, but you may want to put on a nice front just to keep peace in the family. That'd be my best advice from Judaism, but I don't know your beliefs enough to
give direct thoughts.
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Thanks Tom, for your kind words too