Today while my fiancee was on her way to work she called me to let me know her car was overheating so she turned on the heater. Even with the heater on, about every 30 seconds or so her car would overheat saying "AC off due to high engine temp." (this is while her heater is on, not her AC but heater was blowing cold air) about 30 seconds of that, the temp would drop again and the notification would go away and the heater got a bit warmer when it cooled off (not hot like it should be, but not cold). When she got home I went with her to the bank and on our way out of the bank it came up as "Engine overheated - Idle engine" and we pulled into a parking lot. We popped the hood and there was NO heat coming off the engine (which seems strange, since even a car running normal temps would put off heat). The oil looked pretty normal other than the fact that the dipstick was covered with oil to the top, the coolant reservoir looked almost completely empty, and the hose leading to the radiator looked wet in a certain spot (Pictures included). About 2 months ago her check engine light came on with a low boost code and a couple days later it went off so I'm not sure if that could be of any help. I'm at a loss.