No way. Don't do it. I used Spirit to fly to my friend's funeral and regretted it every step of the way. They nickel and dime you to death so in the end, you pay as much or more than you would for a more reputable airline. The flight delays are ridiculous, as are the schedules. I remember having to be at the airport by 4 a.m. because that was the only flight they had all day Saturday that went from Florida to New York. The plane was about an hour late, so getting up at 3 a.m. to catch the plane was a huge waste. The return flight was the same story -- only one flight option back, or fly back on Monday. Neither of us could do that, as we had to go back to work. We were completely exhausted and didn't even have time to have a proper meal or sleep.
They charged me a lot for the checked-in luggage (each way), they charged me for the carry-on as well (again, each way), and charged me once again to sit next to my friend (again, each way) (I have panic attacks and needed my friend, but they didn't budge). In the end, it would have been cheaper to fly with Southwest or JetBlue, both much better airlines. My friend thought the treatment and customer service provided by Spirit was subpar, and he said everyone on the flight was riff-raff. Someone called it the Walmart of flying.
Sorry for your loss, and I hope you find peace. It's not easy to lose anyone, especially a parent. Hope everything works out for you, flight-wise.