I had a similar issue with my GE. The tenant did not try to heat the whole place but there was no ignition to the oven. The surface worked fine...I ended up replacing the valve for $100.00 and my time. Neighbor gave me some insight but I found step-by-step online(gas oven valve replacement)
Check Repair Dr or local appliance for part. Ignitors are alot more so I would start with the valve, esp if she's glowing.
Make sure to check the air intake in oven when you replace. You have to have balance of air intake and gas so as not to soot the oven...Great mess if not caught-sooty!! You can also find directions for this online...
Good luck. Worth doing yurself if you don't want to replace.