Yeah, I think it's quite safe to say there was a high probability of her offing herself if she didn't meet MC anytime soon tbh
Regarding the call for help speech in EP3, she's clearly very troubled, she already had quite a few near mental breakdowns in past episodes, I think it will get worse before it gets better, but it is wise to remember DPC is also quite shitty at justifying some of these scenes (e.g. EP8's "no no no" ending).
He can very well end up alluding to the line below and say that was what MC was talking about back in EP3