How can Ahri be Waifu material when she's out to kill?????

It appears that for some reason, the champion Ahri is considered by many to be Waifu material. However, there is a bit of a problem.

In the lore it says the following:

"A cunning creature, she adapted herself to the customs of human society and used her profound gift of beauty to attract unsuspecting men. She could consume their life essences when they were under the spell of her seductive charms."

Now the lore does go on to say that she experiences regret, is conflicted, and joins the League to try to resolve said conflict.

This however, does not change the following facts:

1. She is a serial killer (fits the definition), she has killed numerous people in the past (and depending on what the end result of her philosophising might be, she may or may not be willing to kill a few more)
2. She uses her sexuality to get what she wants

I would say this should disqualify her as Waifu material if we were being entirely reasonable about this wouldn't you?