Complex sentence: Despite Riglers' offers for continued assistance, the task of caring for Genie by herself quickly overwhelmed her mother, and after a few months she found that taking care of Genie was both physically and financially too difficult for her to manage.
Split into simpler sentences: Despite Riglers' offers for continued assistance, the task of caring for Genie by herself quickly overwhelmed her mother. After a few months, she found that taking care of Genie was both physically and financially too difficult for her to manage.