Heal for 1439, hit for 592 = Dead?

[Nooblet]

Date:10/5/2013
Time:Between 10am-11:15am(not sure of exact time)
Frequency:Once(did not try to reproduce, though heard similar occurrences.)
World name:Coeurl
Character name:Nooblet Gg
NPC name:None
Monster name:Succubus
Class/Level:White Mage/ 50
Party or solo:Party
In-game time:not sure of exact time, happened shortly(up to 1 hr) before I posted original topic that did not follow template on 11/5/2013 at 11:24(Forum Time?)
Area and coordinates:Amdapor Keep
Steps:
1.I received threat of succubus and was hit with Void Thunder III
2.I heal myself for 1439
3.Succubus hits me for 592
4.I die

Connection Specs
- Type of internet connection/provider:CATV/Cable America/ 100Mbps(at least that's what it says, typical download speed is around 200-500 kb/s)
- Modem maker/model number:Motorola/SB5101

PC Specs
-=-=-=-=- System Information -=-=-=-=-
Windows 7 Home 64bit
Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz, 3310 MHz
16.0GB memory
DirectX 11
NVIDIA GeForce GTX580
1920x1280 60hz
Driver Version 331.65 (10/28/2013)

Screenshot of log: http://imageshack.us/a/img196/9494/d5vo.png