i mostly click brainlessly and sometimes i end up with no progression. i am like hamster on a wheel going over the same loop for some time.... then i try other locations (maybe even no heart* one) and-or other chars - and issue goes away .I must be missing something...it's been the green heart and telling me I need to give her another pill for at least 12 weeks now.
* i assume the green heart is not a 100% progression indicator... more like about possible meaningful interaction and trigger but without guarantee in case you missed some 'pre-requisite' actions