With a server reset... if I'm honest I'd say you might get lucky that way. I haven't tried that in many years so I honestly can't say for certain if it'll work or not
However, I'd actually recommend dealing with the spawn in a different way rather than leaving it till the next day. When in Ilshenar and you're in areas you know will have a dangerous paragon the first thing you do is walk rather than run. Ensure your client is setup to show names of incoming characters and monsters so you see a warning as you get within range of the paragon. Then as soon as you see that paragon bit in the name, pre-cast invisibility spell. I have several invis spell macros - one that automatically targets myself so I can use it during taming and one where I just cast the spell and I have a key for target self to land the spell. The idea is that if the creature does target you, you can drop the invis on yourself and your pet becomes the target. As long as you then stand still and don't run, a paragon that doesn't do area attacks will stay targeted on your pet and you'll just have a tougher creature to vet through.
The other thing you can do if a creature is just too tough for you and your pets is try to move it somewhere else nearby. Ideally it's a monster that can't open doors and you can find a room to enclose it, but sometimes you can work with less ideal results. Again this is when pre-cast invisibility is handy, you can run just close to the spawn so it targets you, then run like heck to where you want it to go. Invis yourself. Now, the monster is likely right beside you while you're invisible and if it casts magic it is probably going to try and reveal you. But if you take advantage of that creature losing sight of you and dropping you as a target, you can then run at full speed past it and get out, drop another invis spell on yourself and with luck the creature is still secure and didn't see you for long enough to start attacking. Obviously you'll need to be mounted or flying if you're a gargoyle, or you won't be fast enough. But it's a really useful tactic once you learn it.
With the mechanicals your pets won't attack them with command so yes, you'll need to set your pet to guard you.
If you're fighting a paragon with your pet, and the pet runs off to fight the paragon, rather than walk or teleport beside your pet, try calling the pet back to you with an "all stop" then "all follow me" command. That will bring it to your feet with the monster in tow and you can then tell the pet to guard or kill again and it'll resume the fight. I just find that is much safer if you're dealing with a group of spawn and you want to pull a single paragon out of the group to kill it.
Wenchy