Simplify the following text for a Grade 8 native English-speaking person.
Original: Back in Ulong , Stephenie was unsure if Bobby Jon is still committed to his pact with her and made a back-up alliance with Ibrehem , but the latter was non-committal .
Simplified: Back in Ulong , Stephenie was unsure if Bobby Jon still wanted to stay aligned with Stephenie , so she started a back-up with Ibrehem .