In the original lava, using 'Person' throughout the code grabs the gender from the current person who is logged in, which is why it worked correctly for Tina when she was logged in. Here is the original lava:
{% assign campus = Workflow | Attribute:'Campus','Object' %}
{% assign pastor = Workflow | Attribute:'DefaultConnector','Object' %}
{% assign student = Workflow | Attribute:'Person','NickName' %}
Hi {{ Workflow | Attribute:'Parent','NickName' }}! I heard that {{ Workflow | Attribute:'Person','NickName' }} said Yes to Jesus and I’m so excited for {% if Person.Gender == 1 %}him{% elseif Person.Gender == 2 %}her{% else %}them{% endif %}! I’d love to give {{ Workflow | Attribute:'Person','NickName' }} a free Bible and connect with {% if Person.Gender == 1 %}him{% elseif Person.Gender == 2 %}her{% else %}them{% endif %} on {% if Person.Gender == 1 %}his{% elseif Person.Gender == 2 %}her{% else %}them{% endif %} next steps in following Jesus the next time {% if Person.Gender == 1 %}he{% elseif Person.Gender == 2 %}she{% else %}them{% endif %} is on campus. If you have any questions feel free to reply to this message. I hope to see you soon! {{ pastor.NickName }} {{ pastor.LastName }}, Student Pastor
I changed it slightly to get the person object on line 3, and then used that object to reference the student throughout:
{% assign campus = Workflow | Attribute:'Campus','Object' %}
{% assign pastor = Workflow | Attribute:'DefaultConnector','Object' %}
{% assign student = Workflow | Attribute:'Person','NickName' %}
Hi {{ Workflow | Attribute:'Parent','NickName' }}! I heard that {{ student.NickName }} said Yes to Jesus and I’m so excited for {% if student.Gender == 1 %}him{% elseif student.Gender == 2 %}her{% else %}them{% endif %}! I’d love to give {{ student.NickName }} a free Bible and connect with {% if student.Gender == 1 %}him{% elseif student.Gender == 2 %}her{% else %}them{% endif %} on {% if student.Gender == 1 %}his{% elseif student.Gender == 2 %}her{% else %}them{% endif %} next steps in following Jesus the next time {% if student.Gender == 1 %}he{% elseif student.Gender == 2 %}she{% else %}them{% endif %} is on campus. If you have any questions feel free to reply to this message. I hope to see you soon! {{ pastor.NickName }} {{ pastor.LastName }}, Student Pastor
This one gets the gender correctly from the 'student'.