Problems partying @.@

[Blaaaaaaaah]

Ok so I'm partying with this cleric, who's telling me to attack a monster to make it go near her. I didn't really get it but I just attacked monsters and made it go near her. Then it turned out I was attacking too many but I stopped and only lured one to her afterwards. But others kept spawning and started hitting me when I didn't hit them, so I end up dying cos I'm not a tanker. Then she called me stupid. D:

What am I doing wrong here? Is luring monsters something everyone does? @.@" Is she even trying to get me to lure monsters or what? Anyone have any ideas?