What on earth? Firstly, that display was not of a couple in love, it was of a whiny clingy woman demanding attention from her mate. Secondly, why would she tell her that she heard that about her? Exactly in that way, instead of something like, "I heard you didn't mind when couples displayed their love for each other" or something along those lines, not exactly what Marco said... which turned out to be a lie. And ridiculously childish.

She's dumb. 

Convenient that he says his name last, when she can't say anything or ask any questions of her own.

Must be rushing towards a conclusion because now it's getting sloppy. Dying wish for her to marry within a few days when she hasn't even been dating anyone? And then how many is somehow also supposed to be a good father to Claire? No vetting time or anything? That arc is so ridiculous.

Speaking of labs and equipment... Marco doesn't question why he has a perfumery lab in his attic with journals in Tanya's name and handwriting? 

So... instead of spending the day with her own child whose lying there dying, she spends it with OTHER families as they sit with their own dying family members and it doesn't occur to her that she should she with her own? Cold blooded. I dislike her for this. And then how easily she gives up and says she's dead already after hearing the docs say she had three days? Garbage.

So she notices Barlow looking strange and has seen the same black smoke around his hand as Dorian's but decides to rush to the hospital to help out due to understaffing instead of going to speak with him to see what he knows or could possibly do to help people including her own child? Yep. Makes sense.

The water! I didn't refresh myself before picking this back up, but didn't Dorian have something put in the water supply? 

So where is Marco at this moment? 

Aw! Marco hurry and get your memories! Tanya hurry up and get your wolf!